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2 years ago

If x = 6, find the value of a) X+4 b) 3x c)

Mathematics

1 answer:

White raven [17]2 years ago

7 0

A) 6+4 = 10

b) 3(6) = 18

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Solve: 1 5 x = -10 A) -50 B) -20 C) -2 D) 2

Inessa [10]

Answer:

In order to find x, you will have to use the operation of equality to isolate the x.

$15x=-10$

<em>Now, use the division property of equality and divide by 15 on both sides. This will cancel out the 15 on the left side of the equation and isolate the x completely.</em>

$-10/15=\frac{-2}{3}$

<em>Thus, this is your answer:</em>

$\boxed{x=-\frac{2}{3} }$

6 0

3 years ago

If(√14/√7-2)-(√14/√7+2)=a√7+b√2 find the values of a and b where a and b are rational numbers

seraphim [82]

Answer:

a = 4/3 and b = 0

============================

<h2>Given expression:</h2>

$\dfrac{\sqrt{14} }{\sqrt{7}-2} -\dfrac{\sqrt{14} }{\sqrt{7}+2}$

<h2>Simplify it in steps:</h2>

Bring both fractions into common denominator:

$\dfrac{\sqrt{14} (\sqrt{7}+2)}{(\sqrt{7}-2)(\sqrt{7}+2)} - \dfrac{\sqrt{14} (\sqrt{7}-2)}{(\sqrt{7}-2)(\sqrt{7}+2)}$

Simplify:

$\dfrac{\sqrt{14} ((\sqrt{7}+2) - (\sqrt{7}-2))}{(\sqrt{7}-2)(\sqrt{7}+2)} =$

$\dfrac{\sqrt{14} (\sqrt{7}+2 - \sqrt{7}+2)}{(\sqrt{7}-2)(\sqrt{7}+2)} =$

$\dfrac{4\sqrt{14} }{(\sqrt{7}-2)(\sqrt{7}+2)} =$

$\dfrac{4\sqrt{14} }{(\sqrt{7})^2-2^2} =$

$\dfrac{4\sqrt{14} }{7-4} =$

$\dfrac{4}{3} \sqrt{14} }$

Compare the result with given expression to get:

a = 4/3 and b = 0

4 0

2 years ago

Factor the algebraic expression.<br> 24a + 15<br> 24a + 15 =

hichkok12 [17]

Answer:

x = 5/8

Step-by-step explanation:

24a = 15

Divide both sides by 24:

24a ÷ 24 = 15 ÷ 24

x = 5/8

3 0

3 years ago

Read 2 more answers

Can someone please help me with this

dedylja [7]

I think it would be most likely A the first one.

5 0

3 years ago

Terry is making 5 hat and scarf sets. Each scarf requires 3 yards of material and each hat requires 18 inches of material. How m

Delvig [45]

5*18 = 90
5*3= 15

90+15= 105

4 0

2 years ago