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3 years ago

May somebody help me please

Mathematics

2 answers:

nikitadnepr [17]3 years ago

8 0

Answer:

The answer is C because when you substituted the coordinate pairs into the equation, both sides are equal which tells you that they're a solution to the equation.

Explanation:

All you do is substitute. (x,y)

A:

Substitute

1 = 4(2) - 7

Multiply the number inside the parentheses by the outside number.

1 = 8 - 7

Subtract to get your solution.

1 = 1

Both sides equal to each other so this means that this is a solution to the equation.

B:

Substitute

9 = 4(4) - 7

Multiply the number inside the parentheses by the outside number.

9 = 16 - 7

Subtract to get your solution.

9 = 9

Both sides equal to each other so this means that this is also a solution to the equation.

D:

Both ordered pair is a solution to the equation.

Alik [6]3 years ago

7 0

I’m pretty sure it’s C!! :)

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bezimeni [28]

Answer:

Step-by-step explanation:

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4 years ago

Tory and Emilio's motorboat travel at the same speed. Tory pilots her boat 50 km before docking. Emilio continues for another 2

Harrizon [31]

1. You have that the speed is:

$V=\frac{d}{t}$

Where $d$ is the distance and $t$ is the time.

2. Tory pilots her boat $50 km$ before docking, therefore, his time is

$t1=\frac{50km}{V}$

3. Emilio continues for another $2 hours$ , with a total of $80 km$ before docking. Therefore, his time is:

$t2=(\frac{50km}{2} +2h)$

4. And his speed is:

$V=\frac{80km}{(\frac{50km}{V}+2h)}$

5. Solve for $V$ and substitute the value into the formula of Tory's time:

$\\V=15\frac{km}{h} \\ t1=\frac{50km}{15\frac{km}{h}} t1=3.33h$

The answer is: $3.33 hours$

4 0

3 years ago

I need help ASAP! I will give a big reward! Fairly easy number line question! 6 Points!

Amanda [17]

First, divide the fractions into a decimal format.
8/3=2.667
-11/3=-3.667
Second, find the placement of the decimal.

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3 years ago

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The ten's digit of a two digit number is 1 more than 4 times the units' digit. if 63 is subtracted from the number, the order of

ser-zykov [4K]

Let x be the digit in the tens place and y be the digit in the ones place.
so, the digit is xy

The ten's digit of a two digit number is 1 more than 4 times the units' digit.
x = 4y + 1

63 is subtracted from the number, the order of the digits is reversed
10x + y - 63 = 10y + x
9x - 9y = 63

x = 4y + 1 ------------ (1)
9x - 9y = 63 ---------- (2)

Sub (1) into (2)
9(4y + 1) - 9y = 63
36y + 9 - 9y = 63
27y = 63 - 9
27y = 54
y = 2 ------- sub into (1)

x = 4(2) + 1 = 9

x = 9, y = 2
The number is 92

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4 years ago

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iris [78.8K]

It looks about one third of the bar. So it'd be a third of 400. 400÷3= your answer.

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3 years ago

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