Answer:
zb = 46°
Step-by-step explanation:
za + zb = 90
44° + zb = 90°
90° - 44° = zb
zb = 46°
What is the area of the figure below?
Answer:
two small end square area=s^2.s=3.s^2=9.
but there are 2
2x + 3y = 15
x + y = 6
what is x and what is y
Answer:
[tex]{x,y}={3,3}[/tex]
Step-by-step explanation:
System of Linear Equations entered :
[tex][1] 2x + 3y = 15\\ [2] x + y = 6[/tex]
Graphic Representation of the Equations :
3y + 2x = 15 y + x = 6
Solve by Substitution :
// Solve equation [2] for the variable y
[2] y = -x + 6
// Plug this in for variable y in equation [1]
[1] 2x + 3•(-x +6) = 15
[1] -x = -3
// Solve equation [1] for the variable x
[1] x = 3
// By now we know this much :
x = 3
y = -x+6
// Use the x value to solve for y
y = -(3)+6 = 3
Solution :
{x,y} = {3,3}
Answer:
[tex](3,3)[/tex]
Step-by-step explanation:
[tex]\begin{bmatrix}2x+3y=15\\ x+y=6\end{bmatrix}[/tex]
[tex]\mathrm{Substitute\:}x=\frac{15-3y}{2}[/tex]
[tex]\begin{bmatrix}\frac{15-3y}{2}+y=6\end{bmatrix}[/tex]
[tex]\begin{bmatrix}\frac{15-y}{2}=6\end{bmatrix}[/tex]
[tex]y=3[/tex]
[tex]\mathrm{For\:}x=\frac{15-3y}{2}[/tex]
[tex]\mathrm{Substitute\:}y=3[/tex]
[tex]x=\frac{15-3\cdot \:3}{2}[/tex]
[tex]15-9=6[/tex]
[tex]\frac{6}{2}=3[/tex]
[tex]x=3[/tex]
The angle from a stake in the ground to the top of a tree is 60 degrees. If the height of the tree is 40 feet, what is the distance from the stake to the bottom of the tree (the distance along the gound) in feet? Please explain your answer!
Answer:
23.09 ft
Step-by-step explanation:
Here we are given that the angle from stake in ground to the top of the tree is 60° and the height of the tree is 40ft . We are interested in finding out the distance from stake to the bottom of the tree . For figure refer to the attachment .
From the figure , BC = 40ft which is the perpendicular of the right angled triangle ABC . Also assume that AB = x ft , which is the base of the triangle .
Now since we have base and perpendicular , we should use the ratio of tangent as ,
[tex]\rm\longrightarrow tan\theta =\dfrac{perpendicular}{base}=\dfrac{p}{b} [/tex]
And here [tex]\theta[/tex] = 60° . On substituting the respective values , we have ;
[tex]\rm\longrightarrow tan 60^o =\dfrac{40\ ft}{x \ }\\ [/tex]
And the value of tan60° = √3 , so that ;
[tex]\rm\longrightarrow \sqrt3 =\dfrac{40\ ft}{x} [/tex]
Cross multiply ,
[tex]\rm\longrightarrow x =\dfrac{40}{\sqrt3}ft. [/tex]
The value of √3 is 1.732 approximately .
[tex]\rm\longrightarrow x =\dfrac{40}{1.732}ft. [/tex]
Simplify,
[tex]\rm\longrightarrow \underline{\underline{\red{{x =23.09\ ft }}}} [/tex]
And we are done !
Question of the week. Whoever gives correct answer will be awarded Brainliest.
Answer:
B. 9
Hope it helps!
9
Step-by-step explanation:
3^4=81
3^2=9
therefore 81/9=9
giving brainlist and thanks!!
can an equation in standard form be graphed as a curve?
Answer:
No Equation in Standard form can't be graphed in Curve.
i dont understand the last one can anyone help
Answer:
the spaces between the bars are not equal.
Answer:
the spaces between the bars are not equal
Step-by-step explanation:
-0.5-x=a positive anwer i need help i soo need a a in my math class so help please
Which value is a solution of the equation 185 = w -120
Answer:
w= 305
Step-by-step explanation:
Add 120 to both sides to isolate w.
120+185=305
Let me know if this helped <3
Maritza had to solve 5(4m-6)-10
Hi! I hope you're enjoying your day!
I can help Maritza solve this maths problem. ;)
The first step in solving this problem is using the Distributive Property and distribute 5.
How to distribute 5:
multiply 5 times 4m and -6 and simplify :)
So let's do it! :)
5(4m-6)-10
20m-20-10
Now, combine like terms:
[tex]\boxed{\boxed{\bold{20m-30}}}[/tex]
And yeah, we can't simplify this expression, because 20m and -30 are not like terms.
Hope everything is clear.
If you have any questions, please comment.
#LearningIsFun
[tex]\rule{250}{2}[/tex]
Hello there! Your question is missing some important information to solve. I will solve the equation by simplifying the expression. =)
Answer:
[tex]20m-40[/tex]
Step-by-step explanation:
Given the expression:
[tex]5(4m-6)-10[/tex]
You can simplify it as follows:
1. Apply the Distributive Property multiplying each term inside the parentheses by the number 5 outside:
[tex]=(5)~(4m)-(5)~(6)-10[/tex]
[tex]=20m-30-10[/tex]
2. Add the like terms (remember that like terms have the same variables with the same exponents):
[tex]=20m-40[/tex]
Hence, the answer is [tex]20m-40[/tex]
A toy maker used 36 batteries for his 9 new toy cars. The toy maker uses the same amount of batteries for each toy car. Which table shows the relationship between the amount of batteries and the amount of toy cars? = 25x
The table that shows the proportional relationship between the number of batteries and the number of toy cars is as follows:
x = 12, y = 3x = 24, y = 6x = 48, y = 12 Proportional relationshipproportional relationships are relationships between two variables where their ratios are equivalent.
Therefore, If we establish the relationship between the number of batteries and the number of car toys, we can draw the table.
Therefore,
let
y = kx
where
y = number of toys
x = number of batteries
Therefore,
9 = 36k
k = 9 / 36
k = 1 / 4
y = 1 / 4 x
Therefore,
x = 12, y = 12 / 4 = 3x = 24, y = 24 / 4 = 6x = 48, y = 48 / 4 = 12The question wants to draw a table for the proportional relationship between x(number of batteries) and y(number of toy cars).
learn more on proportional relationships here: https://brainly.com/question/12917806
It takes 20 minutes for Janis to prepare lunch. When Kristen helps, it only takes 12 minutes. How many minutes would it take Kristen to prepare the same lunch if she worked alone
Answer:
30
Step-by-step explanation:
(Solution: 12/20 + 12/x = 1, x = 30 min)
A bookstore sells bookmarks for $0.95. Of a student purchases 6 bookmarks , how much will they spend?
Answer:
$0.95 x 6 = $5.70
Step-by-step explanation:
Multiply 95 x 6 and then divided the product by 100 or just multiply .95 x 6
solve for x using the figure to the right
i think that answers is x=9
find the angle in the attachment
WILL GIVE BRAINLIEST IF CORRECT PLEASE ANSWER!!!!!
Find the value of tan C rounded to the nearest hundredth, if necessary.
Answer:
Step-by-step explanation:
The boy is 56 inches tall and casts a shadow of 48 inches. Which is closest to the height of the tree?
Options
27. 4 ft
37. 3 ft
40. 0 ft
42. 0 ft
Answer:
27.4 ft
Step-by-step explanation:
because only 27.4 small tree
Solve for x.
13x - 1 = 7
What is the root? If there is no root, choose none.
16
16 2/3
None
12
Which unit would you most likely use to represent the time it takes to drive to your friend's house, which is five miles from your house?
A. Days
B. Seconds
C. Minutes
D. Hours
Answer:
C. minutes
Step-by-step explanation:
Answer: C minutes.
Step-by-step explanation:
The picture above represents a small section from the periodic table. Which of the elements has chemical properties most similar to element X?
A.
Element 1
B.
Element 2
C.
Element 3
D.
Element 4
The element that has chemical properties most similar to element X is element 1.
What are the relations in the periodic table?Elements on the periodic table are ordered accordingly to the number of protons in each element.
The first one is hydrogen, with 1 proton, the second is helium, with two protons, and so on.
So, element 3 has one proton less than x, and element 4 has one proton more than x.
Then we have two more relations:
Horizontal lines are called periods, so 3, x, and 4 are on the same period (it is related to the energy level of the valence's electrons).
Vertical lines are called families because elements in vertical lines have similar chemical behavior.
This is the one that we care for this problem, we want to see which element has chemical properties most similar to element X, so we need to see which element is on the same family as element X.
As you can see, the only element on the same vertical line as X is element 1, so the correct option will be A.
If you want to learn more about the periodic table, you can read:
https://brainly.com/question/14514242
What are the factors of x2 – 100? (x – 50)(x 50) (x – 10)(x 10) (x – 25)(x 4) (x – 5)(x 20)
Answer:
(x + 10)(x - 10)
Step-by-step explanation:
x² - 100 = x²- 10²
x² - 100 is the difference of two squares.
The factorization of the difference of two squares is
a² - b² = (a + b)(a - b)
x² - 100 = (x + 10)(x - 10)
Jse prime Pactors to determine the HCF of 90 and 126
18
Step-by-step explanation:
first use the factor tree to find the factors of 90 and 126
90={2×3×3×5}
126={2×3×3×7}
for HCF take common factors with low exponents
HCF={2×3×3}
18
A game of “Doubles-Doubles” is played with two dice. Whenever a player rolls two dice and both die show the same number, the roll counts as a double. If a player rolls doubles, the player earns 5 points and gets another roll. If the player rolls doubles again, the player earns 5 more points. Whenever the player rolls the dice and does not roll a double, they lose points.
How many points should the player lose for not rolling doubles in order to make this a fair game?
5/6
1
5
10/6
Answer:
(B) 1 is the answer.
Step-by-step explanation:
10/36+ 5(5-x)/36-5x/6= 0
x= -1
that means losing 1 point makes the game fair.
Answer:
B - 1
Step-by-step explanation:
100%
Order the group of quadratic functions from widest to narrowest graph.
y=3x^2, y=5x^2, y=7x^2.
Answer:
y=3x^2,y=5^2,y=7x^2
Step-by-step explanation:
y=3x^2 is the widest, y=7x^2 is the narrowest, which leaves y=5x^2 in the middle
△HKO∼△FGO Two right triangles. The first triangle is labeled triangle HKO. Angle H is the right angle. Side KO which is the hypotenuse has a length of 10 units. The other right triangle is labeled triangle FGO. In this triangle, angle F is the right angle and side GO is the hypotenuse with a length of 15 units. The triangles meet at angle O forming a vertical angle. Angles H and F are both right angles. Points H comma O comma and G are on the same line. Points F comma O comma and K are on the same line.
What is the ratio of the area of △HKO to the area of △FGO ? Express your answer as a fraction. Enter your answer in the box.
i need help ( math )
Answer:
Options pls.
Step-by-step explanation:
Can u give options
Answer:
A) complementary angles
B) 58 degrees
Step-by-step explanation:
A) ∠DOE and ∠EOB are complementary angles since they both add up to 90 degrees (or right angle).
B) x + 32 = 90 (Complementary angles)
Subtract 32 to both sides
x = 90 - 32
x = 58 degrees.
[tex]\rule[225]{225}{2}[/tex]
what are the first 100,000 digits of pi?
Answer:
Step-by-step explanation:
Uh, well, you can visit websites that have the first 100,000 digits of pi. I tried putting one of the links here, but I was warned and my answer was deleted, so this is the best that I can help you, I guess.
Say which inference procedure you would use.
You have data from interviews with
a random sample of students who failed to graduate
from a particular college in 7 years and also from a
random sample of students who entered at the same
time and did graduate. You will use these data to
compare the percents of students from rural backgrounds among dropouts and graduates.
The inference procedure that should be used is a hypothesis testing.
What is hypothesis testing?It should be noted that hypothesis testing simply means a statistical test when an individual tests and assumption regarding a population parameter.
In this case, since the data will be used to compare the percents of students from rural backgrounds among dropouts and graduates, the hypothesis testing is appropriate. This is important to assess the plausibility of the hypothesis.
Learn more about hypothesis testing on:
https://brainly.com/question/15980493
Find x. Leave answers in simplified radical form. (Step by step)
Answer:
[tex]\sf x = 4\sqrt{2}[/tex]
Given:
adjacent: 4 cmhypotenuse: x cmangle: 45°using cosine rule:
[tex]\sf cos(x) = \dfrac{adjacent}{hypotenuse}[/tex]
[tex]\sf cos(45) = \dfrac{4}{x}[/tex]
[tex]\sf x = \dfrac{4}{cos(45)}[/tex]
[tex]\sf x = 4\sqrt{2}[/tex]
Solution:
Step-1: Find the missing angle.
90 + 45 + y = 180=> 135 + y = 180=> y = 180 - 135=> y = 45°Step-2: Review the following.
This triangle is an isosceles right triangle because two angles are equivalent.Two sides of the triangle must equal 4 cm.Step-3: Use Pythagoras theorem.
x² = 4² + 4²=> x² = 16 + 16=> x = √32 ≈ 5.65 cm (Using calculator)HELPPPP!!!!!!!!! SIMPLIFY THE EXPRESSION!!!!!!!!!!!
(9ab^-5)^-2
Step-by-step explanation:
QUICK whoever gives correct answer will get brainliest please and thank you.
Answer:
B
Step-by-step explanation:
that is the definition of a function : every valid value of x gets exactly one value of y assigned as function result value.
that allows gaps. not every value on the x-axis has to be a valid x value for the function. and neither do we need every possible y value to be a valid function result value.
so, if we consider x to be the set of {2, 4, 6, 9}, then this is indeed a function.
2 gets 3, 4 gets 9, 6 gets 10, and 9 gets 5 assigned as y (function result) value.
all good and perfect - exactly one assigned value for every valid x value.