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3 years ago

What's one way to check the answer to 5×6=30? a.30÷6=5 b.30×6=5 c.30×5=6 d.5÷6=30

Mathematics

2 answers:

Norma-Jean [14]3 years ago

7 0

Answer:

Option a -30÷6=5

Step-by-step explanation:

Given : Expression 5×6=30

Now , we check one by one which one gives the same result or a one way to answer the expression

a. 30÷6=5 is the one way because

5×6=30

⇒5=30÷6 which is true

b. 30×6=5 is not the correct expression because 30×6=180 not 5

c. 30×5=6 is not the correct expression because 30×5=150 not 6

d. 5÷6=30 is not the correct expression because 5÷6=0.833 not 30

Therefore, one way to check the answer is option a

VikaD [51]3 years ago

3 0

Solve is in the picture

Good luck :)

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Frank is making a pennant in the shape of a triangle for his senior class photo. He wants the base length of this triangle to be

Sav [38]

Answer:

Height should be ≤ 9 inches.

Step-by-step explanation:

Given:

Frank is making a pennant in the shape of a triangle for his senior class photo.

Base of triangle = 6 in

Area of triangle ≤ 27 $in^2$

Let height of the triangle be h

Now we now that,

Area of triangle = $\frac{1}{2}\times base \times height$

$\frac{1}{2}\times 6 \times h \leq 27\\\\3h\leq 27\\\\h\leq \frac{27}{3}\\\\h\leq 9 \ in.$

Hence the height of the triangle must be at most or ≤ 9 inches.

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3 years ago

A coat and a pair of boots are on sale for 20% off. The regular price of the coat is $225. The regular price of the boots is $13

kondaur [170]

Answer:

Part A = $180

Part B = $104

Step-by-step explanation:

Part A:

You do 255÷5=51

51 x 4 = 180

Part B:

You do 130÷5=26

26 x 4 = 104

7 0

3 years ago

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Ac is tangent to circle o at point c what is the length of ac?

MissTica

Answer:

The Answer is 12

Step-by-step explanation:

Use Pythagorean theorem. AB=8 and BO=5 We still need to find AO

AO=AB+BO

8+5

AO=13

Now solve for AC

AC^2 + OC^2= AO^2

AC^2+5^2=13^2

AC^2+ 25=169

AC^2=144

AC= 12

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4 years ago

The number 66 is increased to 72. What is the percentage by which the number was increased, to the nearest tenth of a percent?

Lunna [17]

Answer:

The increase is 9.1%

Step-by-step explanation:

Step 1: Make an equation

$66 * x = 72$

$66x = 72$

Step 2: Divide both sides by 66

$66x / 66 = 72 / 66$

$x = 1.09090$

Step 3: Find the increased

$1 - 1.09090$

$0.091 * 100$

9.1%

Answer: The increase is 9.1%

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3 years ago

In a circle of radius 10 cm, a sector has an area of 40 (pi) sq. cm. What is the degree measure of the arc of the sector?

Rashid [163]

Answer:

144°

Step-by-step explanation:

First, find the area of the circle, with the formula A = $\pi$ r²

Plug in 10 as the radius, and solve

A = $\pi$ r²

A = $\pi$ (10²)

A = 100 $\pi$

Using this, create a proportion that relates the area of the sector to the degree measure of the arc.

Let x represent the degree measure of the arc of the sector:

$\frac{40\pi }{100\pi }$ = $\frac{x}{360}$

Cross multiply and solve for x:

100 $\pi$ x = 14400 $\pi$

x = 144

So, the degree measure of the sector arc is 144°

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3 years ago

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