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3 years ago

ILL GIVE BRAINLIEST!!!!

Mathematics

1 answer:

g100num [7]3 years ago

5 0

Answer:#of dimes is 15 # of quarters is 10

Step-by-step explanation:method is elimination my multiplication. First equation is x+y=25 multiply it by -10. Second equation is 10x+25y=400. A quarter is .25 and a dime is .10 but to avoid all decimals I multiplied by 10 but it doesn’t matter because I did it on both sides. Use systematic equation solving to get 15y=150 then y=10. Plug it into the first to get x+10=25 subtract to get 15. Mr. Jacobs does get excessive sometimes lol.

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Which variable expression represents the phrase "the difference of a number and 11"?

Y_Kistochka [10]

Answer:

$x-11$

Step-by-step explanation:

Let

x ----> the number

we know that

The algebraic expression of the phrase "the difference of a number and 11" is equal to subtract 11 from the number or is equal to the number minus 11

$x-11$

7 0

3 years ago

Does anyone understand this?

masha68 [24]

Answer:

$x = - 1$

$x + 1 = 0$

${(x + 1)}^{2} = {x}^{2} + 2x + 1 = 0$

So m = 2 and n = 1, meaning m + n = 3.

6 0

1 year ago

-5x + x + 9 = -4x + 12

Kamila [148]

-5x + x + 9 = -4x + 12

-4x+9= -4x+12

move +9 to the other side

sign changes from +9 to -9

-4x+9-9= -4x+12-9

-4x= -4x+3

move -4x to the left side

sign changes from -4x to +4x

-4x+4x= -4x+4x+3

0= 0+3

0= 3

Answer: no solution

5 0

3 years ago

Write the expression as a single natural logarithm.3 ln x – 5 ln c

shtirl [24]

The rules are ...
$\Longrightarrow \ln(\frac{a}{b})=\ln(a)-\ln(b)$
$\Longrightarrow \ln(a^{b})=b\ln(a)$

Your expression makes use of both these rules.
$3\ln(x)-5\ln(c)=\ln(x^{3})-\ln(c^{5})=\ln \left( \dfrac{x^{3}}{c^{5}} \right)$

Your single logarithm is ...
$\ln \left( \dfrac{x^{3}}{c^{5}} \right)$

4 0

4 years ago

845,636rounded to ten thousand

bogdanovich [222]

840,000. Also, you shouldn't be relying on this site - there are a lot of posts from you in the last couple of minutes. Find out why that's the answer so you can do it yourself!

8 0

4 years ago