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3 years ago

The solution to 5x - 7 = 21?

Mathematics

2 answers:

NeX [460]3 years ago

5 0

Answer:5.6

Step-by-step explanation:5x=21+7

5x=28

x=28/5

x=5.6

lapo4ka [179]3 years ago

4 0

Answer:

x = 5.6

Step-by-step explanation:

5x - 7 = 21

5x = 28

x = 5.6

Can I geet brainliest

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3 years ago

Can someone plzzz helppp meeee!!!

NISA [10]

Answer:

130

Step-by-step explanation:

Hello There!

An included angle is equal to half the measure of its included arc

So more specifically for this circle

∠mABC = $\frac{1}{2}$ arc(mAB)

So in order to find the value of x we are going to want an equation

Because angle ABC is equal to 1/2 of arc AB we are going to want to multiply angle ABC's expression by two

So 2(3x+32) = 10x+20

now we solve for x

step 1 distribute the 2

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2 * 32 = 64

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6x + 64 = 10x + 20

step 2 subtract 20 from each side

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7 0

3 years ago

Read 2 more answers

11. One card is drawn from an ordinary deck of 52 cards. Find the probabilities of drawing the following.

Scilla [17]

Answer:

3/4
4/13
7/26
2/13
5.52

Step-by-step explanation:

(a)

Probability (A heart or a black card) = 13 + 26 / 52
Probability (A heart or a black card) = 39/52
Probability (A heart or a black card) = 3/4

(b)

Probability (A heart or a jack) = 13 + 3 / 52
Probability (A heart or a jack) = 16/52
Probability (A heart or a jack) = 4/13

(c)

Probability (A heart and the ace of clubs) = 13 + 1 / 52
Probability (A heart and the ace of clubs) = 14/52
Probability (A heart and the ace of clubs) = 7/26

(d)

Probability (A 9 or a jack) = 4 + 4 / 52
Probability (A 9 or a jack) = 8/52
Probability (A 9 or a jack) = 2/13

(e)

Probability (The 9 of hearts or a jack) = 1 + 4 / 52
Probability (The 9 of hearts or a jack) = 5/52

5 0

2 years ago

Loretta has a patio in the shapea trapezoid. The floor of the patio is shown in the sketch below.12 feet5 feetWood PlanksBrick15

beks73 [17]

We can calculate the width of the rectangle patio with pythagorean theorem:

$\begin{gathered} \text{Base of triangle=15-12=3} \\ c^2=a^2+b^2 \\ 5^2=3^2+b^2 \\ b=\sqrt[]{25-9} \\ b=\sqrt[]{16} \\ b=4 \end{gathered}$

Then, she need to put trim on the edge of the floow of the patio that is wood planks and DOES NOT share and edge with the brick part:

$\begin{gathered} T=12+4+12 \\ T=28\text{ feet} \end{gathered}$

Loretta need to put 28 feet of trim.

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1 year ago