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2 years ago

You try! Which of the following boxes is filled in

Mathematics

2 answers:

Arlecino [84]2 years ago

6 0

Answer:

Step-by-step explanation:

1. -48 x - 5 X Z - 5

2. -70 x^63

im not 100%% sure tho

Verizon [17]2 years ago

3 0

Answer:

The first one.

Step-by-step explanation:

The first one. 7x² times 2x = 14x³

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23.21 to the nearest hundredth

Lisa [10]

Answer:

23.21

Step-by-step explanation:

The answer you have given is correct.

7 0

2 years ago

Can someone match these up?

Anuta_ua [19.1K]

Answer:

(-7)(-1.2) = 8.4

(-2.5)(-2) = 5

(2.5)(-2) = -5

(7)(-1.2) = -8.4

Step-by-step explanation:

Multiplication.

4 0

2 years ago

Solve the system by substitution. 4x+3y=5x=4y+6Options: A. The solution is ____B. There are infinitely many solutions. C. There

zvonat [6]

So we have the following system of equations:

$\begin{gathered} 4x+3y=5 \\ x=4y+6 \end{gathered}$

We need to solve it by substitution. This means that we have to take the expression for x given by the second equation and replace x with it in the first equation:

$\begin{gathered} 4x+3y=5 \\ 4\cdot(4y+6)+3y=5 \\ 16y+24+3y=5 \\ 16y+3y=5-24 \\ 19y=-19 \\ y=-\frac{19}{19}=-1 \end{gathered}$

So y=-1. If we use this value in the second equation:

$\begin{gathered} x=4y+6 \\ x=4\cdot(-1)+6 \\ x=-4+6 \\ x=2 \end{gathered}$

So we have x=2 and y=-1 which means that there's one solution. Then the correct answer is A and the solution is (2,-1).

5 0

3 months ago

2. A machine burns m gallons of oil each hour on weekends and ngallons each hour on weekdays. How many gallons of oil are burned

Lynna [10]

The question says the machine uses up m gallons of oil each hour on weekends.

This means that if the machine works for 24 hours each day, it implies that:

$\text{Total amount of oil used up in a day = 24}\times m=24m$

There are only two days on weekends i.e. Saturday and Sunday.

This means that if the amount of oil used in 1 day in the weekend is 24m, then we can say:

Saturday: oil used is 24m

Sunday: oil used is 24m

Total oil used during the weekend is:

$24m+24m=48m$

4 0

3 months ago

Nora and Eli are making homemade spring rolls for a party. Nora can make 8 spring rolls in 10 minutes. Eli can make 10 spring ro

devlian [24]

Eli will finish first.

Use 8/10 and 10/12. This represents how many spring rolls over how many minutes. Make your equations like this: 8/10 = 40/x and 10/12 = 40/x. Find x, which will give you the minutes it takes them to make 40 rolls.

You get x = 50 for the first one and x = 48 for the second. Nora makes 40 rolls in 50 minutes, and Eli makes 40 rolls in 48 minutes. Eli is faster.

Hope this helped! Please mark me brainliest!

4 0

2 years ago