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2 years ago

What is x when 5(2x+1)=10x

Mathematics

1 answer:

Gnoma [55]2 years ago

5 0

Step-by-step explanation:

1.before starting first collect the like terms.

5(2x+1)=10x

the like terms are 10x and 2x

2. 5+1=10x-2x because the 2x us crosing the equality sign

that is

6=8

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Paul [167]

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3 years ago

John is driving around town. When he reaches the gas station, he notes that he has traveled 20 miles. He reaches home 2 hours la

Troyanec [42]

Answer:

$d=5t+20$

Step-by-step explanation:

The equation that will model this situation will be of the form

$d=mt+b$

where $t$ is the time in hours john has traveled since the gas station, and $d$ is the distance.

Now we know that John has already traveled 20 miles when he is at the gas station, this means at $t=0$ , $d=20$ ; or

$20=m(0)+b$

$\boxed{b=20}$

Thus we have

$d=mt+20$ .

Now we need to figure out $m.$

When John reaches home 2 hours later he notes that he has traveled 30 miles, which means he has traveled 30 - 20 = 10 miles; thus we have

$m= \frac{\Delta d}{\Delta t} =\frac{10 miles}{2hours} =5$

$\boxed{m=5}$

Now we have the full equation:

$\boxed{d=5t+20}$

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2 years ago

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Natali5045456 [20]

The formula for the sum of n terms in an arithmetic progression is:
S = n/2 * (2a + (n-1)d)
Here, the common difference, d, is 8 and the first term, a, is 1. Substituting these into the formula, we get:

S = n/2 * (2*1 + 8(n - 1))
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The answer is A.

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2 years ago

On a number line, suppose point E has a coordinate of 4, and EG = 11. What are the possible coordinates of point G?

navik [9.2K]

Answer:

-7, 15

Step-by-step explanation:

The positive difference between E and G is 11.

<h3>Solution</h3>

G - E = 11

G = 11 + E = 11 + 4

G = 15 . . . . . . . . . . . . . when G is right of E

E - G = 11

E - 11 = G = 4 - 11

G = -7 . . . . . . . . . . . . when G is left of E

Possible coordinates for G are -7 and 15.

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1 year ago

Tan^-1[cos(pi)] find the exact value without calculator

nata0808 [166]

Answer:

- $\frac{\pi }{4}$

Step-by-step explanation:

Evaluate cosπ then inverse tan, that is

cosπ = - 1

$tan^{-1}$ (- 1) = - $\frac{\pi }{4}$

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3 years ago