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4 years ago

Ethan claims that StartAbsoluteValue 7 minus 3 EndAbsoluteValue = 4. Which statement about Ethan’s claim is true?

Mathematics

1 answer:

Ivanshal [37]4 years ago

7 0

Answer:

Ethan is correct because the absolute value bars are grouping symbols so first you must subtract. 7 minus 3 = 4, and StartAbsoluteValue 4 EndAbsoluteValue = 4.

Step-by-step explanation:

I know this is correct because I took the test and got it right, but tell me if I'm wrong.

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15 ‒ 5x = 6x + 3 – 2x

LenKa [72]

Answer:

x = 4/3

Step-by-step explanation:

15 - 5x = 6x + 3 - 2x

In this kind of equation, we try to seperate the x's and the numbers.

So we add 5x to both sides and subtract 3 from both sides to seperate these values

15 - 3 - 5x + 5x = 6x + 3 - 3 - 2x + 5x

=> 12 = 9x

=> 12/9 = x

=> 4/3 = x

=> x = 4/3

To check, we can plug this in.

15 - 5(4/3) = 6(4/3) + 3 - 2(4/3)

15 - 20/3 = 24/3 + 3 - 8/3

45/3 - 20/3 = 24/3 + 9/3 - 8/3

25/3 = 25/3

So our answer works.

7 0

3 years ago

Need help ASAP please

Trava [24]

It’s A because rise/run
Rise is y and run is x because the run is going left it’s a negative

4 0

4 years ago

Which expression is equivalent to (2to the third power) times -5?

Airida [17]

2 to the third power is 2³

so 2 to the third power times -5 is 2³ * (-5)

which on simplification will be 8* (-5) =-40

3 0

3 years ago

In triangle ABC, the measure of C is 90°,<br> AC=24, and BC=10. What is the value of sin<br> A?

Sergio039 [100]

Answer:

Sin A = 0.38462

Step-by-step explanation:

From the trigonometric function,

Sin A = $\frac{Opposite}{Hypotenuse}$ ................... 1

So that, applying the Pythagoras theorem to determine the value of hypotenuse,

$/Hyp/^{2}$ = $/Opp/^{2}$ + $/Adj/^{2}$

= $24^{2}$ + $10^{2}$

= 576 + 100

$/Hyp/^{2}$ = 676

Hyp = $\sqrt{676}$

= 26

The hypotenuse of the triangle is 26.

Thus, from equation 1;

Sin A = $\frac{10}{26}$

Sin A = 0.38462

7 0

3 years ago

Of the 50 student in the cafeteria, 7 have red hair. If there are 750 students in the school, predict the number of students who

SVEN [57.7K]

Given data,

Of the 50 students in the cafeteria

7 have red hair.

Total number of students = 750

To find:

The proportion that could be used to predict the number of students who have red hair.

Let us assume the number of students who have red hair = x

The ratio of student having red hair to the total number of students are

$Ratio (1) = \frac{7}{50}$

$Ratio (2) = \frac{x}{750}$

The number of students having red hair is proportional to the total number of students. So, the above ratios are equal.

$\frac{x}{750} = \frac{7}{50}$

Cross multiplication,

50x = 7 * 750

50x = 5250

x = 5250/50

x = 105

Therefore,

The required equation is $\frac{x}{750} = \frac{7}{50}$ and the number of students who have red hair is 105.

Learn more about event correlation here: brainly.com/question/10831881

#SPJ9

4 0

1 year ago