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4 years ago

Midpoint R(-4,6) and S(2,7)

Mathematics

2 answers:

GuDViN [60]4 years ago

7 0

Answer:

To find the midpoint, Add the two X coordinates together then divde by two and then to the same with the Y coordinates:

X = -4 + 2 = -2 / 2 = -1

Y = 6+7 = 13/2

Midpoint = (-1,13/2)

Step-by-step explanation:

shusha [124]4 years ago

5 0

To find the midpoint, Add the two X coordinates together then divde by two and then to the same with the Y coordinates:

X = -4 + 2 = -2 / 2 = -1

Y = 6+7 = 13/2

Midpoint = (-1,13/2)

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Question # 4

Sedbober [7]

Answer:

Brett is 62 years old, Carl is 70 years old and Mark is 80 years old.

Step-by-step explanation:

let the age of Brett be x years.

thus the age of Mark is (x+18) years .

{as it is given that Brett is 18 years younger than Mark}

∴ Age of Carl is (x+8) years .

Now the sum of ages,

3x+26=212 (given)

3x=186

∴x=62

thus , the age of Brett is 62 years , the age of mark is (x+18)= 80 years and the age of Carl is (x+8)= 70 years

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3 years ago

Solve for p in the literal equation 3p + 2r =q.

nlexa [21]

Answer:

3p=q-2r

p= (q-2r)/3

Step-by-step explanation:

8 0

4 years ago

Calculate the number of subsets and the number of proper subsets for the set.

arlik [135]

A set of n elements has 2ⁿ subsets. One of these subsets is the set itself, so this set would have 2ⁿ - 1 proper subsets.

The given set has 4 elements, so it has 2⁴ = 16 subsets and 2⁴ - 1 = 15 proper subsets.

Just to illustrate the claim, we have

• subsets of size 0 (1 of these):

{ } (empty set)

• subsets of size 1 (4 of these):

{1/6}, {1/7}, {1/8}, {1/9}

• subsets of size 2 (6 of these):

{1/6, 1/7}, {1/6, 1/8}, {1/6, 1/9}, {1/7, 1/8}, {1/7, 1/9}, {1/8, 1/9}

• subsets of size 3 (4 of these):

{1/6, 1/7, 1/8}, {1/6, 1/7, 1/9}, {1/6, 1/8, 1/9}, {1/7, 1/8, 1/9}

• subsets of size 4 (1 of these):

{1/6, 1/7, 1/8, 1/9}

and the last one is the only subset that is not a proper subset, because that subset = the set.

6 0

2 years ago

This is ratio math.A passenger car will go 420 miles on 17.5 gallons in city driving. What is the rate in miles per gallon? The

I am Lyosha [343]

We are given two variables, distance and volume of gas required to reach the distance.

We are then asked to find the rate of consumption in miles per gallon.

The approach is simply to divide distance by the volume to get the rate per unit gallon.

$\begin{gathered} \frac{420}{17.5}\cdot\frac{\text{miles}}{\text{gallons}} \\ 24\text{ miles per gallon.} \end{gathered}$

This means that for each gallon consumed, 24 miles are covered.

24 mpg

5 0

2 years ago

I've tried this question multiple times and I just don't understand how to do it :(

Mariana [72]

I think you substitute 189 for the letter t.

You actually do substitute.

6 0

3 years ago