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3 years ago

10

Simplify the mathematical expressions to determine the product or quotient in scientific notation. Round so the first factor goe

s to the hundredths place.

2 answers:

Andrej [43]3 years ago

6 0

Answer:

whats the problem

Step-by-step explanation:

inn [45]3 years ago

5 0

Yejhdbdhdjbdbdbxbbxbd

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Helpppppp meeee please and thank you

Yuki888 [10]

Answer: x would have to equal 8

Step-by-step explanation: When a line intersects parallel lines it forms supplementary angles. The sum of two supplementary angles is 180°

We can use this information to set up an equation:

(6x -7 ) + (19x -13) = 180 . Combine like terms

25x -20 = 180 Add 20 to both sides.

25x = 200 Divide both sides by 25

x = 8

Check:

19(8) - 13 + 6(8) - 7 = 180

152 - 13 + 48 -7 = 180

139° + 41° = 180

The sum of the interior angles formed by the line is 180°, so lines a and b must be parallel.

7 0

3 years ago

Simplify this expression.<br> 3 + 2m -1 + 5m + 12<br> [?]m + [ ]

garik1379 [7]

Answer:

7(m + 2)

Step-by-step explanation:

1) <em>Add the numbers</em>

3 + 2m-1 + 5m + 12
14 + 2m + 5m

2)<em> Combine like terms</em>

14 + 2m + 5m
14 + 7m

3) <em>Rearrange terms</em>

14 + 7m
7m + 14

4) <em>Common factor</em>

<em />

- <em>Factor by grouping</em>

3 + 2m - 1+ 5m + 12
7m + 14

- <em>Factor by grouping</em>

7m + 14
7(m + 2)

⇒ 3 + 2m - 1 + 5m + 12

⇒ 7(m + 2)

Solution:

7(m + 2)

8 0

2 years ago

Can sumbody cashapp me . $chachaslideee

levacccp [35]

Answer:

Nice bro

lol

Step-by-step explanation:

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3 years ago

Which of the following is a binomial? (2 points) c2 + c + 6 c2 − 16 −8c c3 + 4c2 − 12c + 7

slamgirl [31]

In maths, for an expression to be called a binomial, this expression must:
1- have only two terms
2- exponents of the terms must only be positive integers (not fractions or negative integers)
3- if the two terms have the same variable, then the exponent of the variable in each term must be different from that of the other term

Note:
an expression with only one term is called monomial while an expression with only three terms is called trinomial

Comparing the definition of binomial to the given choices, we will find that the correct choice is:
c^2 - 16

7 0

3 years ago

Read 2 more answers

two friends drive from dallas going to el paso, a distance of 600 miles. mary ann zilke travels by highway and arrives at the sa

Ann [662]

The average speed of Carla and mary is 50 and 60 miles per hour respectively.

<u>SOLUTION: </u>

Given, Two friends drive from dallas going to el paso, a distance of 600 miles.

mary and zilke travels by highway and arrives at the same destination 2 hours ahead of carla canola

The average speed of mary ann's car was 10 miles per hour faster than carla's car,

We have to find the average speed of each car?

Now, let the speed of Carla be s miles per hour, then speed of mary will be s + 10 miles per hour.

And let the time taken by Carla be t, then time taken by mary will be t – 2 hours

Now, we know that, distance = speed x time

Then, for mary ⇒ 600 miles = $( s + 10 ) \times (t - 2)$

And for Carla ⇒ 600 miles = $s \times t$

Now, equate both the equations.

(s + 10) (t – 2) = st ⇒ s(t – 2) + 10(t – 2) = st

St – 2s + 10t – 20 = st

2s – 10t + 20 = 0

s – 5t + 10 = 0

since $s \times t = 600$ the above equation becomes,

$\mathrm{s}-5 \times \frac{600}{s}+10=0$

By multiplying equation with s,

$\begin{array}{l}{s^{2}+10 s-3000=0} \\\\ {s^{2}+60 s-50 s-3000=0} \\\\ {s(s+60)-50(s+60)=0} \\\\ {(s+60)(s-50)=0}\end{array}$

s = 50 or -60 [ neglect –ve values, as speed can't be negative]

So, speed of Carla is 50 miles per hour, then speed of mary is 50 + 10 = 60 miles per hour.

Hence, the average speed of Carla and mary is 50 and 60 miles per hour respectively.

7 0

3 years ago