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Mashcka [7]
3 years ago
13

Evaluate the expression for the given value of the variable 5 ×(h+3) for h=7

Mathematics
1 answer:
Bad White [126]3 years ago
5 0

Answer:

<h2>50</h2>

Step-by-step explanation:

Put h = 7 to the expression 5 · (h + 3):

5\cdot(7+3)=5\cdot10=50

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Wilma and Betty are playing a number game. Wilma tells Betty, "I'm thinking of a number between 1 and 10. If I take the number a
Ilia_Sergeevich [38]
Just work this problem out backwards. First write out an equation.
(x+4)•3=30

Now solve :

(x+4)•3=30

3x+12=30
-12   -12

3x=18
/3   /3

x=6

Your answer is 6!

Hoped I helped!
8 0
3 years ago
Please help!
Marat540 [252]

Answer: width = 82.50 m

Step-by-step explanation:

P = 2l x 2w

425 = 2(130) + 2w

425 - 260 = 2w

w = 165 / 2 = 82.50

5 0
3 years ago
Maria has 90$ in a saving account.The interest rate rise a 5% compounded annually.to the nearest cent, how much will he have in
-Dominant- [34]

Answer:

$104.19

Step-by-step explanation:

We will use the compound interest formula to solve this:

A=P(1+\frac{r}{n} )^{nt}

<em>P = initial balance</em>

<em>r = interest rate (decimal)</em>

<em>n = number of times compounded annually</em>

<em>t = time</em>

<em />

First, lets change 5% into a decimal:

5% -> \frac{5}{100} -> 0.05

Now, plug the values into the equation:

A=90(1+\frac{0.05}{1})^{1(3)}

A=104.19

After 3 years, Maria will have $104.19

8 0
3 years ago
There are 220 students in Year 9
e-lub [12.9K]

Answer:

132 and 88

Step-by-step explanation:

If there are 20% more boys than girls, then this means that the total percentage of boys us 60% and girls is 40%.

0.6 * 220 = 132

0.4 * 220 = 88

There are 132 boys and 88 girls in year 9

5 0
3 years ago
The perimeter of a rectangular field is 302 yards. If the width of the field is 65 yards, what is its length?​
Molodets [167]

Answer:

L= 86 yards

Step-by-step explanation:

Perimeter = 2length + 2width

So,

302= 65(2) + 2(L)

302= 130+2L

-130

172=2L

Length= 86

7 0
3 years ago
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