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2 years ago

My daughter really docent understand this an di can't help her so if someone els could that would be great.

Mathematics

1 answer:

joja [24]2 years ago

5 0

Answer:

B, D, F, and H

Step-by-step explanation:

You substitute in each of the numbers for x and see if it equals one of the values in the range. {-37, -25, -13, -1}

A) -6(1)+11=-5 NO

B) -6(2)+11=-1 YES

C) -6(3)+11=-7 NO

D) -6(4)+11=-13 YES

E) -6(5)+11=-19 NO

F) -6(6)+11=-25 YES

G) -6(7)+11=-31 NO

H) -6(8)+11=-37 YES

So the ones to select are B, D, F, and H.

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Riley and Erik have earned a total of 135 tokens to buy items in the school store. The ratio of the number of tokens that Riley

lisabon 2012 [21]

Answer:

Riley has 72 tokens

Step-by-step explanation:

System of Equations

We have two conditions for the tokens Riley and Erik have earned. Let's call x and y to the number of tokens of Riley and Erik respectively. The first condition states that

$x+y=135$

Solving for y

$y=135-x$

The second condition is that the ratio of the number of tokens that Riley had to the number of tokens that Erik has is 8 to 7. It's written as

$\displaystyle \frac{x}{y}=\frac{8}{7}$

Or equivalently

$7x=8y$

Replacing y from the first equation

$7x=8(135-x)$

Operating

$7x=1080-8x$

Simplifying

$15x=1080$

$\boxed{x=72}$

Riley has 72 tokens

3 0

3 years ago

What should be the three sides of a triangle to make it right triangle?

drek231 [11]

Sum of square of two sides must be equal to the square of third side.

5 0

3 years ago

Does anyone know the answer for the question below.

8090 [49]

Answer: option C

Step-by-step explanation:

The diagram of the triangle is shown in the attached photo. The triangle is a right angle triangle ABC

Assuming the given angle is #,

Recalling the trigonometric ratio,

tan # = opposite / adjacent

If tan # = 4, it means

opposite / adjacent = 4/1

Therefore, opposite = 4 and adjacent = 1

Applying Pythagoras theorem,

Hypotenuse^2 = opposite ^2 + adjacent ^2

Hypotenuse = AC

Opposite = 4

Adjacent = 1

AC^2 = 4^2 + 1^2 = 17

AC = ± √17

To determine cos #, we would apply another trigonometric ratio,

Cos# = adjacent /hypotenuse

Cos# = 1/±√17

Cos # =-1 /√17 or 1/√17

8 0

3 years ago

To cover a rectangular region of her yard, Penny needs at least 155 square feet of sod. The length of the

Tasya [4]

To cover a rectangular region of her yard, Penny needs at least 170.5 square feet of sod. The length of the region is 15.5 feet. What are the possible widths of the region?

L=length=15.5 ft; W=width; A=area=>170.5 sq ft

L*W=>170.5 sq ft Divide each side by L

W=>170.5 sq ft/L

W=>170.5 sq ft/15.5 ft=>11 feet

ANSWER: To cover at least 170.5 sq ft. the width must be at least 11 feet.

<h2>Brainly pls</h2>

5 0

2 years ago

15 pts awarded and brainliest will be chosen!!!

Delvig [45]

Answer:

A. x < 6 and x > - 28

Step-by-step explanation:

We have been given the following inequality;

| x+11 | < 17

We can replace the absolute value function by re-writing the inequality as;

-17< x+11<17

subtract 11 from both sides;

-17-11<x+11-11<17-11

-28<x<6

splitting this we have;

x<6

x>-28

7 0

3 years ago

Read 2 more answers