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3 years ago

If R is the midpoint of QS, find QS. QR=5x-3 RS=21-x

Mathematics

1 answer:

steposvetlana [31]3 years ago

4 0

Answer:

QS = 34

Step-by-step explanation:

if R is the midpoint, then the two divided segments are equal to each other.

5x - 3 = 21 - x

Add x

6x - 3 = 21

Add 3.

6x = 24

Divide 6.

x = 4

Substitute this x value into any equation.

5(4) - 3 = 20 - 3 = 17

So half of QS is 17.

QS = 17 * 2 = 34

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The table shows the time Merrida spent driving and the number of miles she drove. She drove the same number of miles each hour.

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Answer:

35 miles per hour

Step-by-step explanation:

175 -140 = 35

35/1 = 35

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2 years ago

a school held a tennis tournament. after each round one fourth of the players were eliminated. if there were 64 players at the s

Sveta_85 [38]

Answer:

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2 years ago

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Assume that thermometer readings are normally distributed with a mean of degrees and a standard deviation of 1.00degrees C. A th

Andrew [12]

Answer:

0.2684 is the probability that the temperature reading is between 0.50 and 1.75.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 0 degrees

Standard Deviation, σ = 1 degrees

We are given that the distribution of thermometer readings is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(Between 0.50 degrees and 1.75 degrees)

$P(0.50 \leq x \leq 1.75)\\\\ = P(\displaystyle\frac{0.50 - 0}{1} \leq z \leq \displaystyle\frac{1.75-0}{1})\\\\ = P(0.50 \leq z \leq 1.75)\\= P(z \leq 1.75) - P(z < 0.50)\\= 0.9599 - 0.6915 = 0.2684 = 26.84\%$

0.2684 is the probability that the temperature reading is between 0.50 and 1.75.

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3 years ago

Find the H.C.F of the following expressions.

Art [367]

Step-by-step explanation:

Hey there!

Please look your required answer in pictures.

Hope it helps!

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2 years ago

What is the sum of the polynomials? ( 8x^2 -9y^2-4x) + (x^2- 3y^2- 7x) answer options are in the pics

algol [13]

(8x^2-9y^2-4x)+(x^2-3y^2-7x)

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(8x^2+x^2)(-9y^2-3y^2)(-4x-7x)

9x^2-12y^2-11x is your answer

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2 years ago

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