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3 years ago

Which shows all the like terms in the expression? ( 4 x minus 3 + 7 x + 1 ) Help Asap will give brainliest. : )

Mathematics

2 answers:

Ksivusya [100]3 years ago

7 0

Answer:

11x-2 is simplified, like terms are 4x, 7x, and -3,1

Step-by-step explanation:

Anestetic [448]3 years ago

6 0

Step-by-step explanation:

4x - 3 + 7x + 1

Solving like terms

11x - 2

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The sum of 3 fifteens and 17 fifteens

svet-max [94.6K]

(3*15)+(17*15)=45+255=300
the final answer is 300
or 20 fifteens

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3 years ago

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Determine the value of a if one solution to the quadratic equation is x equals 5 + 3/2 I

Sindrei [870]

The value of a is $\frac{-9}{4}$

Step-by-step explanation:

1. Determine the other solution of x

If one value is 5 + $\frac{3}{2}$ then the other value is 5 - $\frac{3}{2}$

2. Use reverse technique to find the equation

(5 + $\frac{3}{2}$ ) (5 - $\frac{3}{2}$ ) = 0

25 - $\frac{-15}{2}$ + $\frac{15}{2}$ - $\frac{9x^{2} }{4}$ = 0

- $\frac{9x^{2} }{4}$ + 25 = 0

3. The equation is - $\frac{9x^{2} }{4}$ + 25 = 0

4. Find the value of a

a is the number with the variable $x^{2}$ therefore it is - $\frac{9}{4}$

Keyword: quadratic equation, solution

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3 years ago

A class has fewer than 30 students exactly 2/3of the student's in the class own a football exactly 7/8 of the students in the cl

skelet666 [1.2K]

This number would be 24. So 21 own football boots, 16 own a football and there are 24 children in the class. not good at math so yeah

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2 years ago

A factory adds three red drops and two blue drops of coloring to white paint to make each pint purple The factory will make 50 g

Radda [10]

30 gallons of red paint & 20 gallons of blue paint

Step-by-step explanation:

The ratio of red to blue paint drops to make purple paint is 3 : 2

Therefore the total number of gallon, in this case, fifty (50) is equivalent to the total of two ratios (which is 3 + 2 5)

If 5 in the ratio = 50; what about 2 & 3

5 = 50

2 = x

After cross multiplication;

5x = 50 * 2

X = 100/5

X = 20

The same for ratio 3

5 = 50

3 = y

5y = 50 * 3

y = 150/5

y = 30

The answer is therefore; 30 gallons of red paint to 20 gallons of blue paint

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2 years ago

Find A and B. Using the image above.

NeX [460]

Answer:

a = 7, b = $\frac{7\sqrt{3} }{3}$

Step-by-step explanation:

Using the sine ratio in the left right triangle and the exact value

sin45° = $\frac{1}{\sqrt{2} }$ , then

sin45° = $\frac{opposite}{hypotenuse}$ = $\frac{a}{7\sqrt{2} }$ = $\frac{1}{\sqrt{2} }$ ( cross- multiply )

a × $\sqrt{2}$ = 7 $\sqrt{2}$ ( divide both sides by $\sqrt{2}$ )

a = 7

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Using the tangent ratio in the right triangle on the right and the exact value

tan60° = $\sqrt{3}$ , then

tan60° = $\frac{opposite}{adjacent}$ = $\frac{a}{b}$ = $\frac{7}{b}$ = $\sqrt{3}$ ( multiply both sides by b )

b × $\sqrt{3}$ = 7 ( divide both sides by $\sqrt{3}$ )

b = $\frac{7}{\sqrt{3} }$ × $\frac{\sqrt{3} }{\sqrt{3} }$ = $\frac{7\sqrt{3} }{3}$

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2 years ago