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3 years ago

Y’all please! i will mark brainliest if you answer all 5!

Mathematics

2 answers:

Contact [7]3 years ago

4 0

Answer:

4x + 10, 4x +10, 4x + 20, last 3 are not equivalent

2x + 15y

8x + y + 5

i don't know number 3

5(3d)

ad-work [718]3 years ago

3 0

Answer:

Down below

Step-by-step explanation:

1. first and second bulletin point

- 4x+10

- 4x+20

- 12x+2

- 14x

2. 2x+15y

3. 1/4x; x can be the variable for what the sister has spent

4. 5+3x (not sure on this one but I believe it could be it)

5. Put a star on the x, underline both of the 8, and circle 5

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52.Consider the functionsf(x) = 2* x+6 and g(x) = 5*2x.

likoan [24]

Answer:

$x=\frac{6\ln \left(2\right)}{2\ln \left(5\right)-\ln \left(2\right)}\\x \approx 1.65$

Step-by-step explanation:

Given

$f(x) = 2^{\left(x+6\right)}$

$g(x) = 5^{2x}$

We want to find $f(x) = g(x)$

For this you need to:

if $f(x) = g(x)$ , then $\ln \left(f\left(x\right)\right)=\ln \left(g\left(x\right)\right)$

$\ln \left(2^{x+6}\right)=\ln \left(5^{2x}\right)$

Apply log rule: $\log _a\left(x^b\right)=b\cdot \log _a\left(x\right)$

$\left(x+6\right)\ln \left(2\right)=2x\ln \left(5\right)$

Solve for x

Expand $\left(x+6\right)\ln \left(2\right) = \ln \left(2\right)x+6\ln \left(2\right)$

$\ln \left(2\right)x+6\ln \left(2\right)=2x\ln \left(5\right)$

$\ln \left(2\right)x=2x\ln \left(5\right)-6\ln \left(2\right)\\\ln \left(2\right)x-2x\ln \left(5\right)=-6\ln \left(2\right)\\\left(\ln \left(2\right)-2\ln \left(5\right)\right)x=-6\ln \left(2\right)\\\\x=\frac{6\ln \left(2\right)}{2\ln \left(5\right)-\ln \left(2\right)}\approx 1.65$

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3 years ago

Write 5 + 0.007 in standard form and in words.

Tanya [424]

5.0007. Five and seven ten thousandths

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