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Alexxx [7]
3 years ago
7

The multiplication property of equality could be used to solve which of the following equations?

Mathematics
2 answers:
MArishka [77]3 years ago
7 0
The third one; b÷(-2)=18
zysi [14]3 years ago
5 0

Answer:

b ÷ (-2) = 18

Step-by-step explanation:

find the equation that uses the multiplication property of equality

(x + 2)(x - 3) = 0

To solve for x we set each factor =0. Here we use zero factor property

m + 7 = -12

To solve for m , we subtract 7 from both sides. Here we use subtraction property of equality.

b ÷ (-2) = 18

\frac{b}{-2} =18

HEre the expression has division. To remove the denominator we multiply both sides by -2. So we use multiplication property of equality.

-3 + y = 7

To solve for y , we add 3 on both sides . WE use addition property of equality.

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A 943-foot tree has grown at a constant rate each year. In the equation below, t is the age of the three in years.
Mazyrski [523]

Answer:

B. 41 feet per year

Step-by-step explanation:

943/23= 41

Total feet / coefficient= feet per year

7 0
3 years ago
Read 2 more answers
g A CD player with an original price of $380.00 is on sale at 35% off. What is the discount amount and the CD player sale price?
inna [77]

Answer:

Cost: $247

Discount: $133

Step-by-step explanation:

Simply multiply 380 and 35% off together to get your answer:

380(1 - 0.35)

380(0.65)

247

To find the discount amount, simply subtract the 2 numbers to get your answer:

380 - 247 = 133

4 0
3 years ago
You’re given three angle measurements of 30°, 70°, and 80°. how many triangles can you construct using these measurements?
Papessa [141]
You can only make one triangle because every triangle has 180 degrees so if you add these you get exactly 180 degrees for one triangle

5 0
3 years ago
Read 2 more answers
What’s the correct answer for this question?
Illusion [34]

Answer:

B:

Step-by-step explanation:

If we rotate the 3-D figure around y-axis we'll obtain a cone with a radius of 3 units

5 0
3 years ago
I needed help on this
Strike441 [17]

Answer:

Step-by-step explanation:

Let Freda's sum = x

Donnie has 3/4 x

He spends 63 dollars. His sum is now

3/4x - 63

Now the equation looks like this

6(3/4x - 63) = x            Remove the brackets

6*3/4 x - 378 =x

6 * 3/4 = 4 1/2

4 1/2 x - 378 = x           Add 378 to both sides

4 1/2 x = x + 378          Subtract x from both sides

3.5 x = 378                  Divide by 3.5

x = 378 /3.5

x = 108

Since x = 108, that's how much Freda had. (She spent nothing).

5 0
3 years ago
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