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3 years ago

Please help I don't understand.

Mathematics

2 answers:

Pavel [41]3 years ago

7 0

Answer:

.20

Step-by-step explanation:

add them up and divide them amount of twins by the sum

Kay [80]3 years ago

6 0

I don’t really know sorry

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Please HELP! URGENT!! <br> Lets say that if 1cm represent 1m in real life, what will 1mm represent?

Ghella [55]

1 mm = 0,1 cm

1 cm - 1 m
0,1 cm - x m

$x=\dfrac{0,1\cdot1}{1}=0,1 \text{ m}=10\text{ cm}$

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3 years ago

I need help - Geometry - 15 points + brainlyist - 1 question -

lara [203]

Answer:

$120 = (15 + 22)x + 4 + 5 \\ 120 - 9 = 37x \\ 111 = 37x \\ x = 111 \div 37 = 3 \\$

$15x + 5 = 3 \times 15 + 5 = 50$

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2 years ago

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The ratio of the number of mystery books to the number of science fiction books is 4:3. The ratio of the number of science ficti

vladimir1956 [14]

Given is the number of science fiction books = 48

Let the number of mystery books be = x

Let the number of biographies be = y

Ratio of the number of mystery books to the number of science fiction books is 4:3 so $\frac{4}{3}= \frac{x}{48}$

= $3x=48\times4$

$x=64$

Ratio of the number of science fiction books to the number of biographies is 4:5 so $\frac{4}{5}=\frac{48}{y}$

= $4y=5\times48$

$y=60$

Hence there are 48 science fiction books, 64 mystery books and 60 biographies.

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3 years ago

I don’t know this please help

Brrunno [24]

The Y-intercept is where the line goes through the Y-line. In this case, the Y-intercept is -3.

Slope is y2-y1/x2-x1

(5,6) (0,-3)

6-(-3)=9

5-0=5

9/5 is the slope.

-Steel jelly

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3 years ago