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3 years ago

Write an algebraic expression to model the unknown number problem.

Mathematics

2 answers:

Brrunno [24]3 years ago

6 0

Answer:

1,2,4

Step-by-step explanation:

Morgarella [4.7K]3 years ago

5 0

Answer:

A. You can replace ‘a number’ with a variable to represent an unknown value.

C. Product means the result of multiplying two numbers.

D. The coefficient is 15.

E. In algebraic notation, you can represent the product of a number and a variable by writing the number and variable next to each other.

Step-by-step explanation:

EDGE 2020

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Find the product using suitable rearrangement : 8 × 391 × 125

Step2247 [10]

Answer:

39100

Step-by-step explanation:

$8 \times 391 \times 125 \\ = 391 \times (8 \times 125) \\ = 391 \times 1000 \\ = 391000$

4 0

4 years ago

One x-intercept for a parabola is at the point (-0.4,0). Use the quadratic formula to find the other x-intercept for the parabol

navik [9.2K]

Answer:

-1

Step-by-step explanation:

Set y=0.

$5 {x}^{2} + 7x + 2 = 0 \\ x = \frac{ - 7± \sqrt{ {7}^{2} - 4(5)(2)} }{2(5)} \\ x = \frac{ - 7± \sqrt{ 9} }{10} \\ x = \frac{ - 7±3}{10} \\ x = - \frac{2}{5} \: \: \: \: or \: \: \: \: - 1$

The x-intercepts are - 0.4 and - 1.

The other x-intercept is - 1.

6 0

3 years ago

Which decimal is equivalent to the mixed number plotted at point T on the number line?

Sindrei [870]

A, since 1/8= 6.125. It is before 1/4, so it has to be 1/8, or 6.125.

4 0

3 years ago

Read 2 more answers

What is -36° converted to radians

beks73 [17]

Hello,

The answer is:

-36° × π / 180°

= -0.2π rad

= -0.62831853072 rad

Look to see which one is equivalent to -0.2 pi, and you get C, - pi/5

Hope this helps, have a good day. c;

8 0

3 years ago

Read 2 more answers

Three numbers have the sum of 112. The first number is twice the second and the third number us twice the first. What is the sma

Aleks04 [339]

Answer:

x = 16

Step-by-step explanation:

Let the second number be x.

The first number = 2x

The third number = 2×2x = 4x

2x + x + 4x = 112

7x = 112

x = 112/7

x = 16

8 0

2 years ago