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4 years ago

How do you do number 10?

Mathematics

1 answer:

alexandr402 [8]4 years ago

7 0

(3x +4) + (6x + 5) = 90*
*note that complementary = 90, supplementary = 180
9x + 9 = 90

9x = 90 - 9

9x/9 = 81/9

x = 9

hope this helps

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If Michael invests $2000 in the bank at a rate of 5.5% for 6 years how much interest will he make?

Natalija [7]

Answer:

intereste = 660

Step-by-step explanation:

$interest \: = \frac{2000 \times 5.5 \times 6}{100} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{66000}{100} \\ \: \: \: \: \: \: \: \: \: \: \: = 660 \\$

plz..

mark it as a brilliant answer

8 0

3 years ago

The basketball boosters are selling school t-shirts for 20 dollars and pants for 45 dollars. Last week they sold 100 items and c

lana66690 [7]

He sold 76 shirts and 24 pants.

Step-by-step explanation:

Given,

Cost of one t-shirt = $20

Cost of one pants = $45

Total items sold = 100

Total sales = 2600

Let,

x be the number of t-shirts

y be the number of pants

According to given statement;

x+y=100 Eqn 1

20x+45y=2600 Eqn 2

Multiplying Eqn 1 by 20

$20(x+y=100)\\20x+20y=2000\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(20x+45y)-(20x+20y)=2600-2000\\20x+45y-20x-20y=600\\25y=600$

Dividing both sides by 25

$\frac{25y}{25}=\frac{600}{25}\\y=24$

Putting in Eqn 1

$x+24=100\\x=100-24\\x=76$

He sold 76 shirts and 24 pants.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

3 0

3 years ago

The sum of two numbers is 31. The product of the two numbers is 150. What are the numbers?

mestny [16]

One way is to factor 150 and add the factors
150+1=151, nope
2+75=77, nope
3+50=53, nope
5+30=35, nope
6+25=31, yep

the numbers are 6 and 25

7 0

4 years ago

Read 2 more answers

Simplify: –5 1/4 - (-7 1/2)

Trava [24]

Answer:

-5 1/4 - (-7 1/2) = 9/4

Step-by-step explanation:

Use a calculator to check.

6 0

3 years ago

Plz help ive aked this like 3 times

marta [7]

Answer:

94 tons I got a 100 in the test

3 0

4 years ago