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yanalaym [24]
3 years ago
7

I NEED HELP! PLEASE

Mathematics
1 answer:
Molodets [167]3 years ago
7 0

The diagram from problem 1 is missing. So I'll only answer problem 2.

Let x be the length of the unknown segment (labeled with a question mark)

If you add the parallel bases of any trapezoid, then divide by 2, you'll get the length of the midsegment.

So,

(base1+base2)/2 = midsegment

(x+2.92)/2 = 3.98

x+2.92 = 3.98*2 .... multiply both sides by 2

x+2.92 = 7.96

x = 7.96-2.92 ...... subtract 2.92 from both sides

x = 5.04

<h3>Answer: Choice A) 5.04</h3>
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3x^2 -5x -2=0
Kipish [7]

Answer:

Step-by-step explanation:

1. Find two numbers that add to make the coefficient of x (in this case, -5) and that multiply to make the constant term multiplied by the coefficient of x^2 (in this case, -2 x 3 = -6)

Two numbers that work are -6 and +1

-6 x +1 = -6

-6 + -1 = -5

2. Split the middle term into the two numbers that you found.

3x^2 -6x +x -2 = 0

I've put the -6 on the left side because in our next step, when we factorise, it will be easier than having the numbers the other way around.

3. Factorise the left side by taking out common factors from each pair. The pairs I'm talking about here are '3x^2 and -6x', and 'x and -2'

3x (x-2) +1 (x-2) = 0

4. You now have two numbers both being multiplied by the term x-2. We can rearrange this equation to give us two brackets being multiplied by each other.

(3x + 1) (x-2) = 0

5. According to the Null Factor Law, if two terms are multiplied together and the result is 0, then one of those terms must be 0. Make both terms equal to 0 and solve each for x.

3x + 1 = 0              x-2 = 0

3x = -1                   x = 2

x = -1/3

6. The solutions to this equation are x = 2 and x = -1/3

6 0
3 years ago
Read 2 more answers
The integer whose product with (-1) is 22 is​
nadya68 [22]

Answer:

-22

Step-by-step explanation:

According to the question you need to find a number that gives the result of 22 when multiplied with -1

So, -22 X (-1) = +22

6 0
3 years ago
Please help me please answer it correctly
allochka39001 [22]

Answer:

Correct answer:  B.  0.88 c

Step-by-step explanation:

If the crime rate is reduced by 12%  it means that it is now 88% from the previous one.

88% · c = 88/100 · c = 0.88 c

God is with you!!!

5 0
3 years ago
PLEASE HELP ASAP!! WILL GIVE BRAINLIEST!!
zhenek [66]

Given is :

The area of the rectangular patio is = 130 square feet

Let the width of the patio be = x feet

As length is 3 feet more than the width, so the length is = x+3 feet

Now area of rectangle is = length * width

x(x+3)=130

x^{2}+3x=130

x^{2}+3x-130=0

x^{2}+13x-10x-130=0

x(x+13)-10(x+13)=0

(x-10)(x+13)=0

This gives either x-10=0 or x+13=0

x-10=0 ; x=10

x+13=0 ; x=-13 (neglect this negative value)

So, the width of the patio is = 10 feet

Length = 10+3 = 13 feet

7 0
3 years ago
What value of x makes this equation true? -90=-100+X
WARRIOR [948]

Answer:

-90=-100+x

-90+100=x

x=10

hence 10 is that value whose satisfy this equation

Step-by-step explanation:

7 0
1 year ago
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