1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kondor19780726 [428]
3 years ago
10

Pls help how do I solve this?

Mathematics
2 answers:
Reika [66]3 years ago
6 0
Multiply length by width ( 5 x 4.2x^2-3xy) to get 21x^2 -15xy as your final answer
love history [14]3 years ago
4 0

Answer:

area is just multiplication of sides so..

(4.2x^2 - 3xy) (5)

= 21 x^2 - 15 xy

doneeeeee

You might be interested in
How many times can 10 go into 8000
hichkok12 [17]
10×800=<span>8000 


so answer is 800 times</span>
4 0
3 years ago
Read 2 more answers
a store buys a jacket for $20.00 and then sells it to costumers for 80% more than that.What is the selling price of the jacket?
Harlamova29_29 [7]

Answer:

$36

Step-by-step explanation:

20+80%=36

5 0
4 years ago
Cholesterol levels for a group of women aged 30-39 follow an approximately normal distribution with mean 190.14 milligrams per d
Anettt [7]

Answer:

Step-by-step explanation:

Hello!

X: Cholesterol level of a woman aged 30-39. (mg/dl)

This variable has an approximately normal distribution with mean μ= 190.14 mg/dl

1. You need to find the corresponding Z-value that corresponds to the top 9.3% of the distribution, i.e. is the value of the standard normal distribution that has above it 0.093 of the distribution and below it is 0.907, symbolically:

P(Z≥z₀)= 0.093

-*or*-

P(Z≤z₀)= 0.907

Since the Z-table shows accumulative probabilities P(Z<Z₁₋α) I'll work with the second expression:

P(Z≤z₀)= 0.907

Now all you have to do is look for the given probability in the body of the table and reach the margins to obtain the corresponding Z value. The first column gives you the integer and first decimal value and the first row gives you the second decimal value:

z₀= 1.323

2.

Using the Z value from 1., the mean Cholesterol level (μ= 190.14 mg/dl) and the Medical guideline that indicates that 9.3% of the women have levels above 240 mg/dl you can clear the standard deviation of the distribution from the Z-formula:

Z= (X- μ)/δ ~N(0;1)

Z= (X- μ)/δ

Z*δ= X- μ

δ=(X- μ)/Z

δ=(240-190.14)/1.323

δ= 37.687 ≅ 37.7 mg/dl

I hope it helps!

8 0
3 years ago
If x varies directly as y, and x=4 when y=15, find x when y=36.<br>​
vesna_86 [32]

Answer:

x = 9.6

Step-by-step explanation:

Given that x varies directly as y then the equation relating them is

x = ky ← k is the constant of variation

To find k use the condition x = 4 when y = 15

k = \frac{x}{y} = \frac{4}{15}

x = \frac{4}{15} y ← equation of variation

When y = 36, then

x = \frac{4}{15} × 36 = \frac{144}{15} = 9.6

7 0
4 years ago
Ten years ago Victors age WAs half of the age he will be in 10 years how old is he now?
ICE Princess25 [194]

By solving a linear equation, we will see that Victor is 30 years old.

<h3>How old is Victor now?</h3>

Let's say that Victor is x years old.

We know that 10 years ago, (x - 10), his age was half of what it will be in 10 years (x + 10).

Then we can write the linear equation:

(x - 10) = (x + 10)/2

Now we can solve that equation for x:

2*(x - 10) = x + 10

2x - 20 = x + 10

2x - x = 10 + 20

x = 30

So we conclude that Victor is 30 years old.

If you want to learn more about linear equations:

brainly.com/question/1884491

#SPJ1

3 0
2 years ago
Other questions:
  • How to write 28/35 in simplest form
    6·1 answer
  • Four horses are pulling a wagin.Each horse drinks 45,000 milliliters of water each day.How many liters of water will the horses
    6·1 answer
  • Suppose Lauren is working two jobs to help pay for college. One job pays more per hour than the other. Since her boss at the hig
    5·1 answer
  • A summer camp cookout is planned for the campers and their families. There is room for 200 people. Each adult costs 4, and each
    5·1 answer
  • How much money will be in a bank account after 3 years if $9 is deposited at an interest rate of 5% compounded annually? Round t
    9·1 answer
  • FIRST ONE TO AWNSER GETS BRAINLYISTAND 50 POINTS <br> AND MY LOVE !!!!!!!!!!
    5·2 answers
  • A marina charges $175 for materials and $15 per foot to paint the bottom of a boat. It cost $595 to paint a boat. What is the le
    10·1 answer
  • 3×+9=25-25 cuanto es
    8·1 answer
  • Estimate 55.39 - 48.658 by first rounding each number to the nearest whole number
    9·1 answer
  • Can you please help with the question below?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!