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mars1129 [50]
3 years ago
6

Find the unknown value

Mathematics
1 answer:
Law Incorporation [45]3 years ago
4 0
You have to cross multiply
7x3=21
21 divided by 6 = 3.5 or 3 1/2
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One pretzel has 20 calories. Write an algebraic expression for the total number of calories in n pretzels.
vredina [299]

Answer:

20n

Step-by-step explanation:

One pretzel has 20 calories. Write an algebraic expression for the total number of calories in n pretzels.

1 pretzel = 20 calories

n pretzel = x

Cross Multiply

x × 1 pretzel = n pretzel × 20 calories

x = n pretzel × 20 calories/1 pretzel

x = 20 n

Therefore, an algebraic expression for the total number of calories in n pretzels = 20n

4 0
3 years ago
The standard deviation of the data set is 2.3. Compute the variance to the nearest hundredth. 2,2,2,3,5,5,6,7,8
Arada [10]
The standard deviation is the square root of the variance...so that means the variance is the standard deviation squared.

2.3^2 = 5.29 <===
7 0
4 years ago
If Shelly wants to earn the most interest on her account, but knows she can only keep $100 in her account, which bank's checking
rjkz [21]

Answer:

Chases bank account?

Step-by-step explanation:

3 0
3 years ago
Determine the value of a, b, and c for the quadratic equation: 4x2- 8x = 3
Rufina [12.5K]

Answer:

B. a = 4, b = -8, c = -3

Step-by-step explanation:

The quadratic equation given is:

4x^2- 8x = 3

The general form of a quadratic equation is given as:

ax^2 + bx +c = 0

Let us put the given equation in this form and then compare with the general form of the quadratic equation.

4x^2- 8x = 3\\\\4x^2 - 8x - 3 = 0

Therefore, by comparing:

a = 4

b = -8

c = -3

The correct option is B

4 0
3 years ago
What is 2+21*13-45+12*67
sleet_krkn [62]

Answer:

1034

Step-by-step explanation:

6 0
3 years ago
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