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3 years ago

If 8x + 6 = 3x + 21,

Mathematics

1 answer:

spin [16.1K]3 years ago

4 0

Answer:

x = 3

Step-by-step explanation:

First, subtract 3x from both sides. That leaves 5x+6=21.

Next, subtract 6 from both sides. That leaves 5x=15.

Lastly, divide by 5 and you get x=3

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What is 24x128725(7x782)/199+4+23

ryzh [129]

Answer:

$\bold{\frac{8455687800}{113}}$

Step-by-step explanation:

$\frac{24\times \:128725\left(7\times \:782\right)}{199+4+23}$

$\mathrm{Add\:the\:numbers:}\:199+4+23=226$

$=\frac{24\times \:128725\times \:7\times \:782}{226}$

$\mathrm{Factor\:the\:number:\:}\:24=2\times \:12$

$=\frac{2\times \:12\times \:128725\times \:7\times \:782}{226}$

$\mathrm{Factor\:the\:number:\:}\:226=2\times \:113$

$=\frac{2\times \:12\times \:128725\times \:7\times \:782}{2\times \:113}$

$\mathrm{Cancel\:the\:common\:factor:}\:2$

$=\frac{12\times \:128725\times \:7\times \:782}{113}$

$\mathrm{Multiply\:the\:numbers:}\:12\times \:128725\times \:7\times \:782=8455687800$

$\bold{=\frac{8455687800}{113}}$

$\mathrm{Decimal:74829095.57522}$

5 0

3 years ago

Bill has saved $825 from his last 8 paychecks. He saved either $75 or $150 a paycheck. Formulate and solve a system of equations

11Alexandr11 [23.1K]

Answer: 5 times

Step-by-step explanation:

Let the number of times that he saved $75 be x.

Let the number of times that he saved $150 be y.

Therefore, based on the information given in the question, we can form an equation which will be:

x + y = 8 ...... i

75x + 150y = 825 ....... ii

From equation I,

x + y = 8

y = 8 - x....... iiii

Put equation iii into ii and this will be:

75x + 150y = 825

75x + 150(8 - x) = 825

75x + 1200 - 150x = 825

75x - 150x = 825 - 1200

-75x = -375

x = 375/75

x = 5

He saved $75 5times from his paycheck.

4 0

3 years ago

How to multiply 2^4 tell fast im waiting

dolphi86 [110]

Answer:

2+2+2+2 is equal to 2*4

Step-by-step explanation:

2*4= 8

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F(x)=x^2+14x+40<br> Enter the quadratic function in vertex form

Mademuasel [1]

Easy very easy
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3 years ago

Estimate the length of a new, unsharpened pencil. A. 18 mm B. 8 cm C. 18 cm D. 8 m

enyata [817]

I estimate that the length of a new unsharpened pencil will be 18cm from the options you have provided

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3 years ago

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