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3 years ago

If the ratio of black jeans to bluejeans is 6 to 18 with a total of 240 jeans how many of them are blue

1 answer:

5 0

The ratio is 6:18 and you are trying to find out what are blue. You divide 240 by 6 and get 40. You then multiply 40 x 18 and get 720.

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(2.4×10^−1)−(5.5×10^−2)

Gnesinka [82]

0.185 is your decimal answer but your fraction answer is 37/200 according to my spidey senses.

5 0

4 years ago

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Evaluate the expression (6/3+4)^2÷4×7=

Anastaziya [24]

$answer = 64$

4 0

3 years ago

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What is the first step to solve the following system of equations using substitution? 3x+y=15 5x-3y=11Divide the second equation

Nina [5.8K]

Answer:

(4, 3)

Step-by-step explanation:

#1. Isolate x:

3x + y = 15

y = 15 - 3x

Substitute and solve for x:

5x - 3y = 11

5x - 3(15 - 3x) = 11

5x - 45 + 9x = 11

5x + 9x = 11 + 45

14x = 56

x = 4

Substitute and solve for y:

y = 15 - 3x

y = 15 - 3(4)

y = 15 - 12

y = 3

7 0

2 years ago

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Two right triangles are shown. First, find the missing leg of the triangle on the right. Then you have two lengths to use to fin

jasenka [17]

Answer:

x = 30m

Step-by-step explanation:

GIVEN :-

There are 2 right-angled triangles.

In the triangle on the right side ,

Hypotenuse = 26m
Base = 10m

In the triangle on the left side ,

Base = 18m

TO FIND :-

Length of the common perpendicular to both triangles.
Length of the hypotenuse of the triangle on the left side.

FACTS TO KNOW BEFORE SOLVING :-

$Hypotenuse = \sqrt{Base^2 + Perpendicular^2}$ .
$Perpendicular = \sqrt{Hypotenuse^2 - Base^2}$

SOLUTION :-

In the triangle on the right side ,

$Perpendicular = \sqrt{26^2 - 10^2} = \sqrt{676 - 100} = \sqrt{576} = 24m$

⇒ Perpendicular of the triangle on right side = Perpendicular of the triangle on left side.

In the triangle on the left side ,

$Hypotenuse = \sqrt{24^2 + 18^2} = \sqrt{576 + 324} = \sqrt{900} = 30m$

∴ x = 30m

3 0

3 years ago

Scores on the GRE? (Graduate Record? Examination) are normally distributed with a mean of 520 and a standard deviation of 144. U

Oxana [17]

232 = 520 - 2*144

and

808 = 520 + 2*144

which means scores between 232 and 808 fall within 2 standard deviations of the mean, so about 95% of scores fall in this range.

6 0

3 years ago