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2 years ago

Suppose Marcy's rectangular laptop measures 12 inches by 9 inches. Find the area of her

Mathematics

2 answers:

ale4655 [162]2 years ago

4 0

Answer:

Step-by-step explanation:

Sana makatulong answer ko

Nadusha1986 [10]2 years ago

3 0

697 square centimeters

Step-by-step explanation:

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Ima need help on this one pls do quick

pshichka [43]

Answer:

Step-by-step explanation:

The area of the square is $5^2=25$ and the area of a single triangle is $\frac{1}{2}(5)(4)=10$ .

The total area is the square plus the 4 triangles $25+4(10)=65$

4 0

1 year ago

The sum of the angle measures in a 21-gon is

Dominik [7]

Answer:

180

Step-by-step explanation: The exterior angles sum to 360 and there are 21

6 0

2 years ago

Simplify 4(4a+5b-3)

stiks02 [169]

You times 4 by everything inside the parentheses, so the answer would be as follows. 16a + 20b - 12

4 0

2 years ago

Solve for x. 2x + 5 = 3x -1

viktelen [127]

Answer:

x = 6

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

5 0

2 years ago

Read 2 more answers

Can someone help me with this?

aivan3 [116]

Step-by-step explanation:

The formula for the volume of a sphere is V = 4/3 πr³.

Given

Volume (v) = 57ft³

$v = \frac{4}{3} \pi {r}^{3}$

$57 = \frac{4}{3} \times 3.14 \times {r}^{3}$

$57 = \frac{12.56}{3} \times {r}^{3}$

$57 = 4.19 \times {r}^{3}$

${r}^{3} = \frac{57}{4.19}$

${r}^{3} = 13.6$

$r = \sqrt[3]{13.6}$

Therefore r = 2.4 ft

I gave my answers by rounding off. so if you don't round off then it's answer is 2.3 ft

7 0

2 years ago