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3 years ago

14

Whats the answer to this problem/how to figure it out?!

2 answers:

Evgen [1.6K]3 years ago

7 0

Answer:

<h2>330</h2>

Step-by-step explanation:

$6x^2 +4x +8\\x =7\\\\6(7)^2 +4(7) +8\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\\\mathrm{Calculate\:exponents}\:\left(7\right)^2\::\quad 49\\\\=6\cdot \:49+4\left(7\right)+8\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:6\cdot \:49\::\quad 294\\\\=294+4\left(7\right)+8\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:4\left(7\right)\::\quad 28\\\\=294+28+8\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:294+28+8\:\\:\quad 330$

Readme [11.4K]3 years ago

5 0

6x^2+4x+8

6x7^2+4x+8

blah blah blah

ANSWER

330

pls say if im right

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X = -2y + 300 3y = 800 - 4x

devlian [24]

Answer:

<h2>x = 140, y = 80</h2>

Step-by-step explanation:

$\left\{\begin{array}{ccc}x=-2y+300&(1)\\3y=800-4x&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\3y=800-4(-2y+300)\qquad\text{use the distributive property:}\ a(b+c)=ab+ac\\\\3y=800+(-4)(-2y)+(-4)(300)\\\\3y=800+8y-1200\\\\3y=8y-400\qquad\text{subtract}\ 8y\ \text{from both sides}\\\\-5y=-400\qquad\text{divide both sides by (-5)}\\\\y=80\\\\\text{Put it to (1):}\\\\x=-2(80)+300\\\\x=-160+300\\\\x=140$

8 0

3 years ago

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How do i solve this?

ss7ja [257]

Answer:

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Step-by-step explanation:

8 0

3 years ago

Ilang metro ang 1300 sentimetro?<br><br>a. 1metro<br>b. 13 metro<br>c. 130 metro

Pie

Answer:

1300 cm = 13 m

Step-by-step explanation:

We need to find meters in 1300 cm.

We know that,

1 m = 100 cm

1 cm = (1/100) m

It means,

$1300\ cm=\dfrac{1300}{100}\ m\\\\=13\ m$

Hence, there are 13 m in 1300 cm.

4 0

3 years ago

Use the properties of geometric series to find the sum of the series. for what values of the variable does the series converge t

Oksi-84 [34.3K]

Answer:

- The sum of the series is given as

7/(1 + 7z)

- The series converges for (-1/7, 1/7)

Step-by-step explanation:

Given the geometric series:

7 - 14z + 28z² - 56z³ + ...

The common ratio r is given as

-14z/7 or 28z²/(-14z) or -56z³/(28z²) and so on

r = -7z

The sum of the series is given as

S = a/(1 - r)

Where a is the first term in the series.

S = 7/(1 -(-7z))

= 7/(1 + 7z)

The series converges for |-7z| < 1

That is for -1/7 < z < 1/7

7 0

3 years ago

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Help asap Which explains how to find the quotient of the division below? -3 1/3 divided by 4/9

noname [10]

Answer:

$-7\frac{1}{2}$

Step-by-step explanation:

To find the quotient, convert the mixed number to an improper fraction first

$-3\frac{1}{3}=-\frac{3*3+1}{3}=-\frac{10}{3}$

Find the quotient now

$\frac{(-10/3)}{(4/9)}=-\frac{10*9}{4*3}\\ \\=-\frac{90}{12}$

Simplify

Divide by $6$ both numerator and denominator

$=-\frac{15}{2}=-7.5$

Convert to a mixed number

$-7.5=-(7+0.5)=-(7+\frac{1}{2})=-7 \frac{1}{2}$

4 0

3 years ago

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