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3 years ago

Solve 2x^2+x=15.!!!!

Mathematics

1 answer:

larisa86 [58]3 years ago

8 0

Isolate the variable by dividing each side by factors that dont contain variables

Answer: x=3

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The total cost after tax to repair Deborah's computer is represented by 0.09(60h)+60h, where h represents the number of hours it

marishachu [46]

Answer:

0.09(60h)

Step-by-step explanation:

The part that represents the tax is 0.09.

This is because, we can rewrite the sum as;

Amount of tax + Total cost for the number of hours

Now, the amount of tax can only be a percentage of the total

We can write 0.09 as 9/100

This can be interpreted as 9% of the total amount

So therefore we can rewrite the amount as;

9% of 60h + 60h

So the part that represents the amount of tax Deborah has to pay is 0.09(60h)

7 0

3 years ago

What is the value of tan A?

Fiesta28 [93]

Check the picture below.

4 0

3 years ago

See attachment. what is the length of x in the diagram below?<br> answer in rational form

Norma-Jean [14]

Hi there!
Th' following triangle is divided into 2 sub-triangles!

• In 1ˢᵗ triangle :-

tan 45° = $\dfrac {b}{p}$

⇒ 1 = $\dfrac {5}{p}$

⇒ $p$ = 5

• In 2ⁿᵈ triangle :-

cos 30° = $\dfrac {p}{h}$

⇒ $\dfrac {1}{2}$ = $\dfrac {5}{x}$

⇒ $x$ = 2 × 5

⇒ $x$ = 10

Hence,
Th required answer is 10 units.

~ Hope it helps!

6 0

3 years ago

By rounding each number to 1 significant figure,

luda_lava [24]

Answer:

Step-by-step explanation:

1. 8.2 * 6.7 / 0.46

2. 54.94 / 0.46

3. 119.434783

4: 120

4 0

3 years ago

Given: Q = 7m + 3n, R = 11 - 2m, S = n + 5, and T = -m - 3n + 8.

hram777 [196]

10m + 7n - 14

Steps:
[7m + 3n -(11 - 2m)] + [n + 5 -(-m -3n + 8)]
7m + 3n -11 + 2m + n + 5 + m + 3n - 8
10m + 7n - 14

5 0

3 years ago