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3 years ago

I am loosing soo much of my points by doing this I was at 102 now I am at 40 please answer these correctly

Mathematics

2 answers:

laila [671]3 years ago

7 0

Number 8 is A. 4, when a letter/variable is right beside number you multiply it. So since n=4, the equation should be 7 x 4 + 14= 42...also keep in mind the answer has to be less than 56

So A.4

kupik [55]3 years ago

3 0

Answer:

Step-by-step explanation:

If we know that x is greater than or equal to 4, then we should substitute 4 in place of x in each possible solution.

A 4 + 3 ≥ 1 True, it's greater, but it can't be equal to.

B 3(4) ≥ 1 It's greater once again, can't be equal to.

C 4 - 3 ≥ 1 If x can also be greater than 4, then it works both ways. Equal and greater than.

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pochemuha

Answer:

The answer is the second one because it is less than or equal to 35

3 0

2 years ago

The amount of time (t) in minutes it takes Jeff to mow an average sized yard is related to (n) the number of yards he mows. The

Sveta_85 [38]

Answer:

Jeff mows 9 yards of lawn in 30 minutes

Step-by-step explanation:

The equation that models the amount of time (t) in minutes it takes Jeff to mow an average sized yard is $t=2n+12$ , where n is the number of yards he mows.

To find the number of yards Jeff mows in 30 minutes, we set the equation to 30 and solve for n.

$\implies 2n+12=30$

Add -12 to both sides:

$\implies 2n=30-12$

$\implies 2n=18$

Divide both sides by 2

$\implies \frac{2n}{2}=\frac{18}{2}$

$\implies n=9$

Hence Jeff mows 9 yards of lawn in 30 minutes.

4 0

3 years ago

Solve for t.

wlad13 [49]

One solution was found : t ≤ -13 (number 4)

Pull out like factors :

-3t - 39 = -3 • (t + 13)

Divide both sides by -3

Remember to flip the inequality sign:

Solve Basic Inequality :

Subtract 13 from both sides to get t≤−13

7 0

3 years ago

(image is question) ................................

Nimfa-mama [501]

Answer:

2x^2

Step-by-step explanation:

If you're going to double x^2, you just need to multiply it by 2. You can just put the 2 in front of the x^2 because the order of operations says to do exponents before multiplication.

6 0

2 years ago

Which of the following is true?

Taya2010 [7]

The first one is correct because that one shows how many times you drank milk today but the rest show how many times you drank milk yesterday.

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2 years ago

Read 2 more answers