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azamat
3 years ago
6

If x2 - 4 = 45, then x could be equal to 9 3 5 -7 -4

Mathematics
1 answer:
Ivanshal [37]3 years ago
5 0
Transpose the constant on the left hand side of the equation to the right side. The equation becomes x² = 45 + 4, 
                                               x² = 49
                                           x = sqrt(49) 
                                            x = 7 and x = -7
Only -7 is on the choices. Thus, the answer is x = -7.
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Nicole has 81/2 cups of yogurt to make smoothies. Each smoothie uses 3/4 cup of yogurt. What is the maximum number of smoothies
Virty [35]

Answer:

With that amount of yougurt she can make 54 smoothies.

Step-by-step explanation:

In order to calculate how many smoothies Nicole can make with the amount of yogurt she has we need to take the total amount of yogurt and divide it by the amount used in each smoothie. So we have:

total yorgut = 81/2 cups

each smoothie = 3/4 cup

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7 0
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3 years ago
In the after school Dena, Shawn, and Amanda knit scarfs that are the same size with yellow, white, and blue yarn. Denas scarf is
jenyasd209 [6]

Answer:

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Step-by-step explanation:

We have been given that in the after school Dena, Shawn, and Amanda knit scarfs that are the same size with yellow, white, and blue yarn. Denas scarf is 2/5 yellow, Shawn's scarf is 3/5 , and Amanda's scarf is 3/4 yellow.

To make Amanda's argument true, let us compare each fraction by making a common denominator.

We can see that least common denominator of each fraction would be 20.

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\text{Shawn's scarf}=\frac{3}{5}\Rightarrow\frac{3*4}{5*4}=\frac{12}{20}

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Since \frac{8}{20} , therefore, Amanda's scarf has the most yellow.

8 0
3 years ago
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