All categories

3 years ago

Can someone solve this?

Mathematics

1 answer:

insens350 [35]3 years ago

7 0

Answer:

<h3> Jake is 13 years old</h3>

Step-by-step explanation:

D - age of Dani

J = D+2 - age of Jake

E = 2J = 2(D+2) = 2D+4 - age od Ethan

Z = 2E = 2(2D+4) = 4D+8 - age of Zoe

The sum of their ages is 102:

D + J + E + Z = 102

D + D+2 + 2D+4 + 4D+8 = 102

8D + 14 = 102

-14 -14

8D = 88

÷8 ÷8

D = 11

J = 11+2 = 13

You might be interested in

-5x= -15 solve for x

cricket20 [7]

Answer:x=3

Step-by-step explanation:

-5x=-15

divide by -5

x=3

7 0

3 years ago

Read 2 more answers

Please help with this

ANTONII [103]

Answer: Complementary angles

Step-by-step explanation:

wxy is making a 90 degree angle which is a complementary. A supplementary is a 180 degree angle

5 0

3 years ago

A dog’s heart beats 6600 times in an hour. What is their pulse rate in beats per minute?

Artist 52 [7]

Answer:

110 beats per minute.

Step-by-step explanation:

Since we know it beats 6600 beats per hour and there are 60 minutes in an hour then we have to divide 6600 by 60 which is 110.

7 0

3 years ago

Read 2 more answers

(-2,y) and (2,4); slope: 1/4

Oduvanchick [21]

Answer:

y =3

......

.....

....

.....

8 0

2 years ago

The hypotenuse of a right triangle measures 16 cm and one of its legs measures 9 cm. Find the measure of the other leg. If neces

Vesnalui [34]

$\sf\huge\underline{\star Solution:-}$

<h3><u>Given that</u>:</h3>

Hypotenuse of a right triangle = $\sf\blue{16cm.}$
One side (leg) = $\sf\blue{9cm.}$

Measure of another side(leg).

<h3><u>Solution</u>:-</h3>

$\rightarrow$ As we know that,

$\sf{A^2 +B^2 \:=\: C^2}$ (Pythagoras Theorem)

So, using this formula we can find measure of another side(leg).

$\rightarrow$ $\sf{A^2 +B^2 \:=\: C^2}$ (putting the value of both given side of triangle)

Here I am putting the value of hypotenuse in C because it is the longest side of triangle.

$\rightarrow$ $\sf{9^2 +B^2 \:=\: 16^2}$

$\rightarrow$ $\sf{81 +B^2 \:=\: 256}$

$\rightarrow$ $\sf{B^2 \:=\: 256-81}$

$\rightarrow$ $\sf{B^2 \:=\: 175}$

$\rightarrow$ $\sf{B \:=\: \sqrt{175}}$

$\rightarrow$ $\sf{B\:=\: 13.22(approx)}$

Therefore, measure of another side (leg) of the triangle = $\sf\purple{ 13.22(approx).}$

____________________________________

Hope it helps you:)

6 0

2 years ago