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3 years ago

What is the answer to 93+(68+7)

Mathematics

1 answer:

Rasek [7]3 years ago

7 0

93+(68+7)do whats in the parenthesis first

93(75)

multiply them together

6975 is your answer plz rate my answer as brainliest

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Solve : 20-9x=11 4(2x+1)=8 5(2x+5)=-15 3(8x+1)=-21

laila [671]

20-9x=11
-9x=11-20
-9x= -9
x= -9/(-9)
x=1

4(2x+1)=8
2x+1=8/4
2x+1=2
2x=2-1
2x=1
x=1/2
x=0.5

5(2x+5)=-15
2x+5= -15/5
2x+5= -3
2x= -3-5
2x= -8
x= -8/2
x=-4

3(8x+1)=-21
8x+1= -21/3
8x+1= -7
8x= -7-1
8x =-8
x= -8/8
x= -1

4 0

3 years ago

What is the slope of a line perpendicular to the line of y=-1/4x-1

harina [27]

Answer: 4

The given line has a slope of -1/4 as this is the number in front of the x. The general equation y = mx+b has m as the slope. So m = -1/4 is given

Flip the sign to get -1/4 turn into +1/4 or just 1/4

Then flip the fraction (aka reciprocal) to go from 1/4 to 4/1 and that simplifies to 4.

Multiplying the original slope (-1/4) and the perpendicular slope (4) will result in -1.

5 0

3 years ago

The length of a concrete slab is three more than three times the width. It's area is 330 square feet. What is the length of the

marin [14]

Answer:

Width: 10.5 feet

Length: 31.5 feet

Step-by-step explanation:

Let x represent width of the concrete slab.

We have been given that the length of a concrete slab is three more than three times the width. So length of the slab would be $3x$ .

We are also told that the area of slab is 330 square feet. We can represent this information in an equation as:

$x\cdot 3x=330$

$3x^2=330$

$x^2=\frac{330}{3}$

$x^2=110$

Now, we will take square root of both sides.

$\sqrt{x^2}=\sqrt{110}$

$x=10.488\approx 10.5$

Therefore, the width of slab is approximately 10.5 feet.

The length of the slab would be $3x\Rightarrow3(10.5)=31.5$ .

Therefore, the length of slab is approximately 31.5 feet.

6 0

3 years ago

Read 2 more answers

If I was born on January 28, 2004 when will a become 15 and 1/2

Anon25 [30]

I think on January 14

8 0

3 years ago

What is 575 written as a mixed number

bonufazy [111]

Answer:

5 3/4

Step-by-step explanation:

575/100==23/4=5 3/4

4 0

3 years ago