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3 years ago

9(3-2x)= 2(10-8x) What's X

Mathematics

1 answer:

Evgesh-ka [11]3 years ago

5 0

Answer: 3.5

Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

x=72

Decimal Form:

x=3.5

Mixed Number Form:

x=312

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What is 90985 rounded off to the nearest thousand? A.90000 B.91000 C.90900 D.100000

kotykmax [81]

Answer:

B. 91000

Step-by-step explanation:

8 0

3 years ago

Find marcRQT. Honestly, I have no clue what I’m doing so please answer

maria [59]

Answer:

angels on a line add up to 180.

the angle opposite the 47 degrees is vertically opposite so that angle will be 47 degrees

180 - 47 - 55 = 78

78 + 55 = 133

angle qpu = 133 degrees

I'm not sure what Marc rqt means but hopefully the angles I have worked out help?

5 0

3 years ago

A trapezoid has base lengths of 5 meters and 3.5 meters. If the height of the trapezoid is 4 meters, what is the area of the tra

aev [14]

Answer:

17 m² or 17 square meters

Step-by-step explanation:

A trapezoid has base lengths of 5 meters and 3.5 meters. If the height of the trapezoid is 4 meters, what is the area of the trapezoid?

Area of a trapezoid =1/2(b1 + b2)h

Where

b1 = First base length = 5m

b2 = Second base length = 3.5 m

Height = 4m

= 1/2(5m + 3.5m) × 4m

= 1/2(8.5m) × 4m

= 1/2 × 8.5m × 4m

= 17 m²

Therefore, the area of the trapezoid is 17 m² or 17 square meters

6 0

3 years ago

A certain store sells only T-shirts. Let the random variable X represent the number of T-shirts bought from the store on any day

faltersainse [42]

Answer:

$(a)\ \mu_y = 1125$

$(b)\ \sigma_y = 300$

Step-by-step explanation:

Given

$\mu_x = 75$ -- Mean of T-shirts

$\sigma_x = 20$ -- Standard deviation of T-shirts

$Rate = \$ 15$

Solving (a): The mean of the revenue $(\mu_y)$

To solve this, we use:

$\mu_y = Rate * \mu_x\\$

This gives:

$\mu_y = 15 * 75$

$\mu_y = 1125$

Solving (b): The standard deviation of the revenue $(\sigma_y)$

To solve this, we use:

$\sigma_y = \sqrt{Rate^2 * \sigma_2^2}$

This gives:

$\sigma_y = \sqrt{15^2 * 20^2}$

$\sigma_y = \sqrt{90000}$

$\sigma_y = 300$

7 0

3 years ago

Carrie has 3 times as many green beads as red beads and 2 as many blue beads as green beads if she has 150 total how many green

Vikentia [17]

There are 45 green beads

Solution:

Let the number of red beads be "x"

Given that, Carrie has 3 times as many green beads as red beads

Number of green beads = 3 times number of red beads

Number of green beads = 3x

She 2 as many blue beads as green beads

Number of blue beads = 2 times the number of green beads

Number of blue beads = 2(3x) = 6x

She has 150 total

Therefore,

Number of red beads + Number of green beads + Number of blue beads = 150

x + 3x + 6x = 150

10x = 150

x = 15

Thus, number of green beads = 3x = 3(15) = 45

Thus there are 45 green beads

7 0

4 years ago