Guest #5491825

2 months ago

**Answer:**

x=−4 or x=12

**Step-by-step explanation:**

Step 1: Factor left side of equation.

(x+4)(x−12)=0

Step 2: Set factors equal to 0.

x+4=0 or x−12=0

x=−4 or x=12

Guest #5491826

2 months ago

**Answer:**

-7 ?

**Step-by-step explanation:**

x^2 - 8x -48=0

add both x

-7x -48=0

+48. +48

-7x = 48

----- -----

-7 -7

x = -7

Question

Can anyone please explain to me how Equivalent Expressions work?

Solution 1

**Answer:**

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value(s) for the variable(s). Examples.

**Step-by-step explanation:**

Solution 2

**Answer:**

if you give me an example i will walk it through with you

**Step-by-step explanation:**

Question

What is the value of x in the equation 4/7 [21/8x + 1/2] =-2 [1/7-5/28]? Write your solution in decimal form.

Solution 1

The answer is -6.39 but in fraction form it could be negative 147/23

Question

Last night, Adaline slept for 10 hours. APPROXIMATELY what percentage of a full day did she sleep?

Solution 1

**Answer:**

41 2/3% or 41.66%, or whole number 43%

**Step-by-step explanation:**

10/24

Solution 2

Since yo find a percentage you need to multiply a fraction by 100 and there is 24 hours in a day it is 10 over 24 times 100 will give you the percentage

Question

Find the Area & Circumference of a circular pizza with a diameter of 22.0cm.

Solution 1

**Answer:**

**Circumference = 69.14cm****Area = 380.29cm²**

**Step-by-step explanation:**

**Circumference. **

Circumference of a circle is calculated by the formula:

= Pie * diameter

= π * diameter

= 22/7 * 22

**= 69.14 cm **

**Area **

Area of circle:

= Pie * radius ²

Radius = diameter/2

= 22/2

= 11 cm

Area = 22/7 * 11²

= 22/7 * 121

**= 380.29 cm²**

Question

Which problem situation can be represented by the equation below? 150 – 3x = 60

Solution 1

X is 30 because we can minus 60on both sides and add 3x on both sides to find the answer

Solution 2

**Answer:**

C, and x=30

Karen had a gift card for $150. She bought 3 gifts for her sisters. The gifts cost the same amount, x. After paying for the gifts, her gift card had a balance of $60.

**Step-by-step explanation:**

Question

What is a ratio that compares two quantities measured in different units called

Solution 1

**Answer:**

**Rate**

**Step-by-step explanation:**

The rate is the ratio that makes the comparision between two quantities that are different to each and contains diffeent kind of measuring units

It also provide the information like feet per second, miles per hour, etc

So the ratio that makes the comparision between the different kind of units is known as rate

Question

Joseph finished his homework at 3:47pm. Round the time to the nearest ten minutes.

Solution 1

It would be 3:5 because 47 round up to 3:50

Question

Which algebraic expression is equivalent to the expression below? (6x + 13) + 6

Solution 1

**Answer:**

6x+19

**Step-by-step explanation:**

The parentheses do nothing here to stop you from adding - since every term in here is only being added, there is no reason to worry about the parentheses. Simply combine like terms (13 + 6) to achieve 6x + 19.

Question

In which number does the 9 represent 1/10 of the value that it represents in 92300

Solution 1

923000 is the **number **in which 9 **represents **1/10th of its **value **in 92300.

If an **event** can occur in m **different **ways and if following it, a **second event **can occur in n **different **ways, then the two **events **in **succession **can occur in m × n **different **ways.

we need to find the **number **in which 9 **represents **1/10th of its **value **in 92300.

here, this **number **would be 10 times **larger**.

**Multiply **92300 by 10

= 92300 x 10

= 923000.

Learn more about **multiplications**;

#SPJ2

Solution 2

**Answer:**

923000.

**Step-by-step explanation:**

You want to find the number in which 9 represents 1/10th of its value in 92300. Naturally, this number would be 10 times larger. Multiply 92300 by 10 to get 923000.

Question

Graph y−5=−2/3(x+9).
plot two different points. please show work i am very lost. thank you

Solution 1

Y -:5 = 2/3x + 6 because 6 is 2/3 of 9

add 5 to both sides

y - 5 +:5 = 2/3x + 6 + 5

y = 2/3x + 11

the y intersept is 11 or (0 , 11) when x is 0

when x is 3

y = 2/3 (3) + 11 or 2 + 11 = 13

so a 2nd point could be (3 , 13)

add 5 to both sides

y - 5 +:5 = 2/3x + 6 + 5

y = 2/3x + 11

the y intersept is 11 or (0 , 11) when x is 0

when x is 3

y = 2/3 (3) + 11 or 2 + 11 = 13

so a 2nd point could be (3 , 13)

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