All categories

3 years ago

Devaughn's age is three times Sydney's age. The sum of their ages is 52. What is Sydney's age?

Mathematics

2 answers:

Alborosie3 years ago

8 0

Answer:

Sydney is 13 and Devaughn is 39

Step-by-step explanation:

13x3=39

39+13=52

Phantasy [73]3 years ago

3 0

Answer:

Sydney is 13 and Devaughn is 39

You might be interested in

Which expression is equivalent to 5(3 + 4k ) + 3(4 +k )?

shepuryov [24]

Answer:

Step-by-step explanation:

Simplify the expression

5 0

3 years ago

Read 2 more answers

A parachutist descends 40 feet in 4 seconds. What integer represents the parachutist's change in height in feet per second?

polet [3.4K]

Answer:

-10

Step-by-step explanation:

You want to know the rate of descent in feet per second represented by a descent of 40 feet in 4 seconds.

The rate is the amount divided by the time:

-40 ft/(4 s) = -10 ft/s

The relevant integer is -10.

8 0

1 year ago

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the di

Olin [163]

Solution: We are given:

ACT scores follow normal distribution with $\mu=20.9,\sigma =4.8$

SAT scores follow normal distribution with $\mu=1026,\sigma=209$

Now, let's find the z score corresponding to Joe's SAT score 1351.

$z=\frac{x-\mu}{\sigma}$

$=\frac{1351-1026}{209}$

$=\frac{325}{209}$

$=1.56$

Therefore, Joe's SAT score is 1.56 standard deviations above the mean.

Now, we have find the Joe's ACT score, which will be 1.56 standard deviations above the mean.

Therefore, we have:

$z=\frac{x-\mu}{\sigma}$

$1.56=\frac{x-20.9}{4.8}$

$1.56 \times 4.8 = x - 20.9$

$7.488=x-20.9$

$x=20.9+7.488$

$x=28.388 \approx 28.4$

Therefore, Joe's equivalent ACT score to SAT score 1351 is 28.4

7 0

3 years ago

What is an equation perpendicular to y=-4/7x+9/7

Irina18 [472]

Y=7/4x+9/7 is an equation perpendicular to that

6 0

2 years ago

What is an

Evgesh-ka [11]

Step-by-step explanation:

$y = - 4$

6 0

3 years ago

Read 2 more answers