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spin [16.1K]
2 years ago
13

Solve. State the number of solutions.

Mathematics
1 answer:
Oksi-84 [34.3K]2 years ago
5 0

Answer:

a. x=8

b.Step 1: Simplify both sides of the equation.

2(2x−2)=4x−4

(2)(2x)+(2)(−2)=4x+−4(Distribute)

4x+−4=4x+−4

4x−4=4x−4

Step 2: Subtract 4x from both sides.

4x−4−4x=4x−4−4x

−4=−4

Step 3: Add 4 to both sides.

−4+4=−4+4

0=0

Answer:

All real numbers are solutions.

c. Step 1: Simplify both sides of the equation.

3(x+1)=4x+7−x

(3)(x)+(3)(1)=4x+7+−x(Distribute)

3x+3=4x+7+−x

3x+3=(4x+−x)+(7)(Combine Like Terms)

3x+3=3x+7

3x+3=3x+7

Step 2: Subtract 3x from both sides.

3x+3−3x=3x+7−3x

3=7

Step 3: Subtract 3 from both sides.

3−3=7−3

0=4

all credit goes to mathpapa

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HELP ASAP WILL MARK BRAINLY
vodomira [7]

Answer:

\frac{61}{99}

Step-by-step explanation:

let x = 0.616161 (etc.)

make a second equation because you multiply by 100:

100x = 61.616161 (etc.)

subtract from each other

100x = 61.616161

     x =  0.616161

you get

99x = 61

solve for x

\frac{61}{99}

5 0
3 years ago
Why is the simplified value of the expression below? -8*(-3)
kirill115 [55]
When you multiply two numbers which have the same sign the answer is positive. Therefore multiply eight and three to get 24 and the answer is positive; therefor the answers 24.
8 0
2 years ago
Help anyone please i need it
zheka24 [161]

Answer:

The sum is equal to -905,200

Step-by-step explanation:

we know that

The formula to calculate the sum is equal to

Sn=n\frac{(a1+an)}{2}

In this problem

n=775 -----> number of terms

a1 is the first term

a1=(-3(1)-4)=-7

an is the last term

an=(-3(775)-4)=-2,329

substitute

Sn=775\frac{(-7-2,329)}{2}=-905,200

4 0
3 years ago
Ann,Bill and Collin are travelling in a car from Glasgow to Poole. Ann, Bill and Collin share the driving so that the distances
Marina CMI [18]

Answer:

770 km

Step-by-step explanation:

the ratio of Ann driving to total driving = 3 : 11

\frac{3}{11} × total distance traveled = 210km

total distance traveled = 210 km × \frac{11}{3} = 770 km

8 0
2 years ago
(take π=22/7). height of trapezium with parallel sides 6cm and 8cm and 63cm2.​
Nataly_w [17]

Answer:

Circumference = 39.6 cm

We know:

Circumference of a circle = 2πr

⇒39.6 =2×

22

7

×r⇒

39.6×7

2×22

=r⇒r=6.3 cm

Also,

Area of the circle = πr2

=

22

7

×6.3×6.3=124.74 cm2

Step-by-step explanation:

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3 years ago
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