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Nataly [62]
3 years ago
13

If y = 4 when x = -6, find y when x = 15.

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
6 0
Y=5. Difference between -6 and 4 is ten so 15-10 =5
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A gem is cut in a kite shape. It is 6.2 millimeters wide at its widest point & 5 millimeters long. What is the area?
arlik [135]

Answer: 15.5\ mm^2

Step-by-step explanation:

You can calculate the area of a kite with the following formula:

A=\frac{d_1d_2 }{2}

Where d_1 is the length of a diagonal and d_2 is the length of the other diagonal.

In this case, you can identify that:

d_1=6.2\ mm\\d_2=5\ mm

Therefore, the final step is to substitute the values into the formula.

Then, the area is:

 A=\frac{(6.2\ mm)(5\ mm)}{2}\\\\A=15.5\ mm^2

5 0
3 years ago
Kevin can travel 22 1/2 miles in 1/3 hour .What is the average speed in miles per hour?
Fantom [35]
You can choose to answer this with fractions or decimals. I'll choose fractions because we won't need calculators. 22 1/2 miles "in" 1/3 hour, means 22 1/2 mi divided by 1/3 hour.
22 1/2 = [(22×2) + 1] ÷ 2 = 45/2
So (45/2)mi ÷ (1/3)hr is the same as (45/2) × (3/1), or (45×3)/2 = 135/2, which is 67 1/2, or 67.5 mi/hr (mph).
8 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs.
Elza [17]

Answer:

Part 1)  -7 →  \dfrac{y^2-y+6}{-2(y+7)}  

Part 2) 3/2 → \dfrac{y^2-2y+1}{2y-3} 

Part 3) 1  → \dfrac{5y^2-6y+1}{-5(y-1)}

Part 4) -1/4 → \dfrac{y(y+5)}{4y+1}

Step-by-step explanation:

<u><em>The complete question in the attached figure</em></u>

we know that

To find out the non permissible replacements for y, equate the denominator of each expression equal to 0.

step 1    

we have

\dfrac{y^2-2y+1}{2y-3}

Equate (2y-3) equal to 0.

2y-3=0

solve for y

Adds 3 both sides.

2y=3

Divide both sides by 2.

y=\dfrac{3}{2}

therefore

3/2 is the non permissible replacement for y.

step 2

we have

\dfrac{y(y+5)}{4y+1}

Equate (4y+1) equal to 0.

4y+1=0

Subtract 1 both sides

4y=-1

Divide by 4 both sides

y=-\dfrac{1}{4}

therefore

-1/4 is the non permissible replacement for y.

step 3

we have

\dfrac{5y^2-6y+1}{-5(y-1)}

Equate -5(y-1) equal to 0.

-5(y-1)=0

Divide by -5 both sides

y-1=0

Adds 1 both sides

y=1

therefore

1 is the non permissible replacement for y.

step 4

we have

\dfrac{y^2-y+6}{-2(y+7)}

Equate -2(y+7) equal to 0.

-2(y+7)=0

Divide by -2 both sides

y+7=0

Subtract 7 both sides

y=-7

therefore

-7 is the non permissible replacement for y

7 0
3 years ago
I need this Now (2x + 1)²
Alla [95]

Answer:

4x² + 4x + 1

Step-by-step explanation:

We know that (a + b)² = a² + 2ab + b², therefore, (2x + 1)² = 4x² + 4x + 1.

7 0
4 years ago
Read 2 more answers
What is 3.31 + 1 kilometer
MArishka [77]

Answer:

4.31 kilometer

..........................................

5 0
3 years ago
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