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faust18 [17]
3 years ago
8

Evaluate the following expressions

Mathematics
1 answer:
Bess [88]3 years ago
3 0

Step-by-step explanation:

a.2+9-5=6

b.-9+1=-8

c.7(-36+50/120)2

=7(24/120)2

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What is the measure of ∠4? Enter your answer in the box.
Whitepunk [10]

Answer:

59

Step-by-step explanation:

5 0
3 years ago
What is the equation of a line that has a slope of -2/3 and a x-intercept of -3?
garri49 [273]

For this case we have that, by definition, the equation of a line in the slope-intersection form is given by:

y = mx + b

Where:

m: It's the slope

b: It is the cutting point with the y axis

We have, according to the statement data that:

m = - \frac {2} {3}

So, the equation is of the form:

y = - \frac {2} {3} x + b

We also have that the line intersects the "x" axis at -3, that is, the line passes through the point (x, y): (- 3,0)

We substitute to find "b":

0 = -\frac {2} {3} (- 3) + b\\0 = -2 + b\\b = 2

Finally, the equation is of the form:

y = - \frac {2} {3} x + 2

Answer:

y = - \frac {2} {3} x + 2

6 0
3 years ago
The cost of a phone is reduced by 20%. The new cost is $70.40. What was the original price?
Anton [14]

Answer:

.8x = $70.40

x = 70.4/.8

x = $88

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A cereal box is a rectangular prism that is 8 inches long and 2 1/2 inches wide. The volume of the box is 200in3. What is the he
Zarrin [17]

Answer:

Height=10\, inches

Step-by-step explanation:

Volume of a Rectangular Prism is :

             Length\times Width \times Height

For,

Volume=200\,inch^3\\\\Length= 8\,inches\\\\Width=2\dfrac{1}{2}=\dfrac{5}{2}\\\\  Height=?\\

200=8\times \dfrac{5}{2}\times Height\\\\ 200=4\times 5\times Height\\\\200=20\times Height\\\\Height=\dfrac{200}{20}\\\\ Height=10\,inches

The Height of the rectangular prism is: 10\,inches

7 0
3 years ago
Alejandro uses the steps below to convert StartFraction 5 over 8 EndFraction to a percent. Five-eighths right arrow 8. 0 divided
adoni [48]

Alejandro makes an error in the first steps he divides 8 by 5 which is incorrect he has to divide 5 by 8, and in the second step, he does not multiply the term by 100 and it can be determined by using fraction or percentage.

<h2>Given that,</h2>

Alejandro uses the steps below to convert 5/8 to a percent.

8 divided by 5 = 1.6.,

1.6 = 160 percent

<h3>We have to determine,</h3>

Which best explains Alejandro's error?

<h3>According to the question,</h3>

Alejandro uses the steps below to convert 5/8 to a percent.

8 divided by 5 = 1.6.,

1.6 = 160 percent

The division was computed incorrectly.

The division was completed in the incorrect order. The decimal was moved to the right too many times.

The decimal was moved to the right instead of the left.

Alejandro uses the steps below to convert 5/8 to a percent.

To convert 5/8 into percentages following all the steps given below.

  • Step1; Firstly 5 is divided by 8,

                   = \dfrac{5}{8} \\\\ = 0.625

  • Step2; To convert 0.625 into percentage multiplied by 100,

                    \rm = 0.625 \times 100\\\\= 62.5 \ percent

Hence, Alejandro makes an error in the first steps he divides 8 by 5 which is incorrect he has to divide 5 by 8, and in the second step, he does not multiply the term by 100.

For more details about the Equation refer to the link given below.

brainly.com/question/18187260

7 0
2 years ago
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