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2 years ago

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To pass science, a student must earn at least a grade of 70. How many students failed this science class? A histogram titled Sci

ence Grades has grades on the x-axis and number of students on the y-axis. 2 students received a score of 50 to 59; 5 students received a score of 60 to 69; 8 students received a score of 70 to 79; 5 students received a score of 80 to 89; 2 students received a score of 90 to 100.

1 answer:

Rashid [163]2 years ago

4 0

Answer:

7 students

Step-by-step explanation:

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Please help I think its 16 but not sure

Stels [109]

Answer:

I think its 12 to this question

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3 years ago

Cheryl and rodney are mixing yellow and blue paint to make green paint. The table shows how much of each color they use. Whose g

Tomtit [17]

The amount of blue color in the green paint is an illustration of ratios and proportions.

Cheryl's green paint has more blue color

The proportion of blue color is calculated as:

$\mathbf{Proportion = \frac{Blue}{Blue+ Yellow}}$

So, we have:

$\mathbf{Cheryl= \frac{16}{16+ 24}}$

$\mathbf{Cheryl= \frac{16}{40}}$

$\mathbf{Cheryl= 0.40}$

Express as percentage

$\mathbf{Cheryl= 40\%}$

$\mathbf{Rodney= \frac{6}{6+ 10}}$

$\mathbf{Rodney= \frac{6}{16}}$

$\mathbf{Rodney= 0.375}$

Express as percentage

$\mathbf{Rodney= 37.5\%}$

By comparison: 40% >37.5%

Hence, Cheryl's green paint has more blue color

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2 years ago

Answer with Explanation please! Thank you!

Anna [14]

Answer:

The answer is D.

Step-by-step explanation:

First you have to get rid of brackets by expanding :

$3 {q}^{2} + {r}^{3} + 5r - 8q + 2( {q}^{2} + r)$

$= 3 {q}^{2} + {r}^{3} + 5r - 8q + 2 {q}^{2} + 2r$

Next you have to simplify by collecting like terms :

${r}^{3} + 3 {q}^{2} + 2 {q}^{2} + 5r + 2r - 8q$

$= {r}^{3} + 5 {q}^{2} - 8q + 7r$

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3 years ago

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What does -12(4+g)=?

dolphi86 [110]

Answer:

-48-12g

Step-by-step explanation:

Use the distributive property to get your answer

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3 years ago

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beginning at sea level a scuba diver dove 1 2/3 feet into the water , and then dove an additional 3 2/5 feet at what elevation i

skad [1K]

The given details are illustrations of addition and subtractions of fractions. The scuba driver is at an elevation of $-5\frac{1}{15}$ ft below the sea level.

Given that:

$n_1 = 1\frac 23$ --- the first dive

$n_2 = 3\frac 25$ ---- the additional dive

From the question, we understand that the diver starts at the sea level.

This is represented with 0ft.

So, the diver's elevation (d) is calculated as follows:

$d = 0 - n_1 - n_2$ --- we use subtraction because the diver is below the sea level

So, we have:

$d = 0 - 1\frac 23 - 3\frac 25$

$d = - 1\frac 23 - 3\frac 25$

Convert fractions

$d = - \frac 53 - \frac{17}5$

Take LCM

$d = \frac{-5 \times 5 - 17 \times 3}{15}$

$d = \frac{-76}{15}$

Reduce fraction

$d = -5\frac{1}{15}$

The above value means that the diver's elevation is at $-5\frac{1}{15}$ ft below the sea level.

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2 years ago