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3 years ago

7. Which of these expressions are equivalent to 10x + 11? Select the three that apply.

Mathematics

1 answer:

Eva8 [605]3 years ago

4 0

Answer:

Step-by-step explanation:

7 times 1x equals 7x. Then 7 times 2= 14. Thirdly, 7x plus 3x equals 10x. Lastly, 14 -3 equals 11. So 10-+11 altogether

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Solve the equation. Round to the nearest hundredth. Show work.

denis-greek [22]

Answer:

Final answer is approx x=-0.66.

Step-by-step explanation:

Given equation is $5^{-2x-1}=4^{4x+3}$ .

Now we need to solve equation $5^{-2x-1}=4^{4x+3}$ and round to the nearest hundredth.

$5^{-2x-1}=4^{4x+3}$

$\log(5^{-2x-1})=\log(4^{4x+3})$

$(-2x-1)\log(5)=(4x+3)\log(4)$

$-2x \log(5)- \log(5)=4x \log(4)+3 \log(4)$

$-2x \log(5) -4x \log(4)=3 \log(4) +\log(5)$

$x=\frac{\left(3\log(4)+\log(5)\right)}{\left(-2\log(5)-4\log(4)\right)}$

Now use calculator to calculate log values, we get:

$x=-0.65817959094$

Round to the nearest hundredth.

Hence final answer is approx x=-0.66.

8 0

4 years ago

A car is moving 70 miles per hour. how far does it travel in 16 seconds

Serjik [45]

Answer:

0.311 miles

Step-by-step explanation:

Convert 16 seconds to hours :

16 /60×60

= 16÷3600

= .004444hrs

Distance = Speed × time

= 70 × 0.00444444

= 0.311 miles

4 0

3 years ago

Read 2 more answers

What is the value of y when x = 43<br><br> PLS HELPP

Goryan [66]

Answer:

Hi there~

y=87

X side. Y side

1. 3

2. 5

3. 7

4. 9

5. 11

Step-by-step explanation:

We can see that ix x = 1 and y = 3, then that means 1+2

then its 2+3 then 3+4 and so on

So 43 + 44 = 87

So y should equal 87 :)

3 0

3 years ago

What is the point-slope form of a line with slope 4/5 that contains the point

Genrish500 [490]

Awnser: Its D uhm yea...

Step-by-step explanation:

5 0

3 years ago

0.4continue write as fraction

Simora [160]

2/5 would be your answer

Hope I helped!

3 0

3 years ago