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3 years ago

Match each equation to its solution.

Mathematics

2 answers:

nlexa [21]3 years ago

7 0

Answer:

i)x=6

ii) x=-7

iii) x=-5

Step-by-step explanation:

First take the no. to the other sides. Then divide, then u will get x

astra-53 [7]3 years ago

4 0

Good job you got it right! But others won’t be able to find it because you have a basic writing for it. Next time put the actual equations on so others can find it!

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105 people must be split into 3 equal groups. How many people in each group?

Allisa [31]

Answer:

35 people in each

Step-by-step explanation:

105÷3=35

6 0

3 years ago

Create a system of equations

Vika [28.1K]

Answer:

Answer: Janet is 16, and David is 11.

Step-by-step explanation:

Let the ages be j and d.

j = d + 5

j + d = 27

Substitute d + 5 for j in the second equation.

d + 5 + d = 27

2d + 5 = 27

2d = 22

d = 11

Substitute 11 for d in the first equation.

j = d + 5

j = 11 + 5

j = 16

Answer: Janet is 16, and David is 11.

6 0

2 years ago

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

Burka [1]

Answer:

$x=-0.75$

Step-by-step explanation:

The given equation is

$4^{-5x-7}=6^{2x-1}$

We take logarithm of both sides to base 10.

$\log(4^{-5x-7})=\log(6^{2x-1})$

$(-5x-7)\log(4)=(2x-1)\log(6)$

We expand the brackets to get;

$-5x\log(4)-7\log(4)=2x\log(6)-\log(6)$

Group similar terms;

$-7\log(4)+\log(6)=2x\log(6)+5x\log(4)$

$-7\log(4)+\log(6)=(2\log(6)+5\log(4))x$

$\frac{-7\log(4)+\log(6)}{(2\log(6)+5\log(4))}=x$

$x=-0.752478$

To the nearest hundredth.

$x=-0.75$

3 0

3 years ago

Which of the following is the MOST accurate definition of standard deviation

zzz [600]

The MOST accurate definition of standard deviation is the mean absolute deviation of the sum of the squared deviation from the average. Option 4

<h3>Definition of standard deviation</h3>

Standard deviation can be defined as a statistic tool that measures the dispersion of a dataset in relation to its mean and is calculated as the square root of the available variance of the set.

It is calculated as the square root of the given variance.

Thus, the MOST accurate definition of standard deviation is the mean absolute deviation of the sum of the squared deviation from the average.

Learn more about standard deviation here:

brainly.com/question/475676

#SPJ1

6 0

2 years ago

The equation K = mv2 represents the energy an object has based on its motion. The kinetic energy, K, is based on the mass of the

docker41 [41]

<span>The answer is She should have multiplied by 2 instead of dividing by 2.
First one.</span>

6 0

3 years ago

Read 2 more answers