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3 years ago

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Andy is one fourth as old as his grandfather who is 76 years old write an equation to determine whether Andy is 19 or 22 years o

ld

1 answer:

iren [92.7K]3 years ago

7 0

76÷4= ; x=19, you divide 76 by 4 because if he is 1/4 then it would be a group of one of the 4's, thus saying ehen you divide 76 by 4, it equals 19, so he is 19 years old, you could also do 19×4 and 22×4 to see which equals 76.

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I need help do you guys know how to help me with this

Stells [14]

Answer:

Quadratic, Linear, Exponential.

Step-by-step explanation:

You can find the average difference between rows. For example, in the first one, between the ys, it changes by 1, then 3, then 5, then 7. If you look at the changes between these you get 2 each time. Because you had to look at the differences twice, its quadratic. It's linear if you had to look at it once. Exponential you can just see if you can multiply the same constant between each row.

7 0

3 years ago

I need help with this

cestrela7 [59]

<h2><u> $\bold\color{plum}\tt \: Answer \: \: 1 :$ </u></h2>

Diameter = 4 cm

Radius = Diameter/2 = 2 cm

Area of circle :

$= \pi{r}^{2}$

$= 3.14 \times 2 \times 2$

$= 3.14 \times 4$

$= 12.56 \: {cm}^{2}$

Circumference of circle :

$= 2\pi r$

$= 2 \times 3.14 \times 2$

$= 12.56 \: \: {cm}^{2}$

<h2>Therefore, </h2><h3>Diameter = 4 cm</h3><h3>Radius = 2 cm</h3><h3>Area = 12.56 cm²</h3><h3>Circumference = 12.56 cm</h3>

<h2><u> $\bold{\color{plum}\tt \: Answer \: \: 2 :}$ </u></h2>

Circumference = 15 feet (given)

Radius :

$= 2\pi r$

$= 2 \times \frac{22}{7} \times r = 15$

$= \frac{44}{7} \times r = 15$

$= 44r = 15 \times 7$

$= 44r = 105$

$= r = \frac{105}{44}$

$= r = 2.38 \: feet$

Diameter = r×2 = 2.38 × 2 = 4.76 feet

Area :

$= \pi {r}^{2}$

$= 3.14 \times 2.38 \times 2.38$

$= 17.78 \: {ft}^{2}$

<h2>Therefore, </h2><h3>Diameter = 4.76 feet</h3><h3>Radius = 2.38 feet</h3><h3>Area = 17.78 ft²</h3><h3>Circumference = 15 feet</h3>

<h2><u> $\color{plum}\tt \: Answer \: \: 3 :$ </u></h2>

Diameter = 2 cm (given)

Radius = D/2 = 2/2 = 1 cm

Circumference :

$= 2 \pi r$

$= 2 \times 3.14 \times 1$

$= 6.28 \: feet$

Area :

$= \pi {r}^{2}$

$= 3.14 \times 1 \times 1$

$= 3.14 \: {ft}^{2}$

<h2>Therefore, </h2><h3>Diameter = 2 cm</h3><h3>Radius = 1 cm </h3><h3>Area = 3.14 ft²</h3><h3>Circumference = 6.28 feet</h3><h2 /><h2><u> $\color{plum}\tt \: Answer \: \: 4 :$ </u></h2>

Radius = 4.3 mm

Diameter = r×2 = 4.3 × 2 = 8.6 mm

Circumference :

$= 2\pi r$

$= 2 \times 3.14 \times 4.3$

$= 27 \: mm$

Area :

$= \pi {r}^{2}$

$= 3.14 \times 4.3 \times 4.3$

$= 3.14 \times 18.49$

$= 58.05 \: {mm}^{2}$

<h2>Therefore, </h2><h3>Diameter = 8.6 mm</h3><h3>Radius = 4.3 mm</h3><h3>Area = 58.95 mm²</h3><h3>Circumference = 27 mm</h3>

7 0

3 years ago

15x – 7 = 4x – 18<br> What is x

Triss [41]

Answer:

x = - 1

Step-by-step explanation:

Given

15x - 7 = 4x - 18 ( subtract 4x from both sides )

11x - 7 = - 18 ( add 7 to both sides )

11x = - 11 ( divide both sides by 11 )

x = - 1

3 0

3 years ago

Shane is goin to the movies with his friends.His mom give them $15.00 to spend on snacks. Drinks cost $2.00 each and candy cost

RUDIKE [14]

<h3>- - - - - - - - - - - - - - - ~<u>Hello There</u>!~ - - - - - - - - - - - - - - - </h3>

➷ Simply divide the values:

15/2 = 7.5

Shane can buy 7 drinks

OR

15/3 = 5

Shane can buy 5 candies.

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ Hannah ♡

3 0

4 years ago

Which two factors of -48 sum to 2

Rufina [12.5K]

-6 and 8
-6+8=2
(-6)(8)=-48

5 0

3 years ago