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3 years ago

5

Richard took a math quiz last week. There were 100 problems on the quiz and Richard answered 30% of them correctly. How many pro

blems did Richard get correct?

2 answers:

densk [106]3 years ago

8 0

Answer:

Step-by-step explanation:

100×3=300÷100

he got 3 correct.

kolbaska11 [484]3 years ago

6 0

Answer: he got 30 of them correctly

Step-by-step explanation: because 30% of 100 is 30.

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3 years ago

As part of a grand opening, an arcade gave out free tokens to the first 100 customers. If you spent $5, you got 61 tokens. If yo

allsm [11]

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2 years ago

The opening soccer game at the new arena was attended by approximately 2,800 Caucasians, 4,800 African Americans, and 15,00 Hisp

worty [1.4K]

<u>Answer:</u>

The ratio of African Americans to Hispanics Americans present is 16 : 5

<u>Explanation:</u>

Given the people attending the soccer game were:

2800 among them are Caucasians

4800 are African Americans

1500 are Hispanics

And, 1400 of those were from other ethnic backgrounds

We have to find the Ratio of African Americans to Hispanics Americans

Therefore,

African Americans : Hispanics Americans = 4800 : 1500

$\frac{\text { African American }}{\text { Hispanics American }}=\frac{4800}{1500}=\frac{48}{15}=\frac{16}{5}$

Hence, the ratio of African Americans to Hispanics Americans present in the ratio were 16 : 5

5 0

3 years ago

How do you multiply two numbers that are written in scientific notation format?

Mamont248 [21]

Answer:

To multiply two numbers in scientific notation, multiply their coefficients and add their exponents. To divide two numbers in scientific notation, divide their coefficients and subtract their exponents. In either case, the answer must be converted to scientific notation.

Step-by-step explanation:

3 0

3 years ago

masha68 [24]

Answer:

Step-by-step explanation:

Volume of the figure = Base area * height

Base area:

Base area = area of trpezium + area of triangle

<u />

<u>Trapezium:</u>

a, b area the length of parallel sides and h is the height of trapezium.

a = 8 m ; b = 5 m & h = 3 m

$\boxed{ \text{ Area of trapezium = $\dfrac{(a +b)*h}{2} $}}$

$=\dfrac{(8+5)*3}{2}\\\\\\=\dfrac{13*3}{2}\\\\\\= \dfrac{39}{2}\\\\\\= 19.5 \ m^{2}$

<u>Triangle:</u>

height = 4 m & base = 8 m

$\boxed{\text{Area of triangle =$\dfrac{1}{2}*base*height$}}$

$=\dfrac{1}{2}*8*4\\\\\\= 4*4\\\\= 16 \ m^{2}$

Base area = 19.5 + 16

= 35.5 m²

Volume of the figure = Base area * height

= 35.5 * 14

= 497 m³

8 0

2 years ago