2 years ago

HELP QUICK!! solve by substitution and show work please

1 answer:

7 0

Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form:

x= 1, y= -4

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I did the first question already I need help with the second pls :>

OleMash [197]

Answer:

The box is considered a cube so,

4 x 4 = 16

56 divided by 16 = 3.5 is your height

1/2 x 1/2 x 1/2 = 1/8.

56 divided by 1/8 = 7 cubes

5 0

2 years ago

Easy question

Leviafan [203]

$\dfrac{\mathrm dy}{\mathrm dt}=ky\iff\dfrac{\mathrm dy}y=k\,\mathrm dt$

Integrating both sides, we get

$\ln|y|=kt+C$
$\implies y=e^{kt+C}=e^{kt}e^C=Ce^{kt}$

When $t=0$ , we have $y=10000$ , so that

$10000=Ce^{0k}\implies C=10000$

When $t=4$ , we have $y=8000$ , which means

$8000=10000e^{4k}\implies k=\dfrac14\ln\dfrac{8000}{10000}\approx-0.0558$

5 0

2 years ago

A dance school has 63 ballet dancers a 42% of the total number of dancers in the score ballet dancers what is the total number o

melamori03 [73]

42% of what is 63

0.42x = 63
x = 63/0.42
x = 150

There are 150 dancers in the school

3 0

3 years ago

56· 328+162· 44+166· 44−x =0<br> find x<br> the dot is to mutiply

Slav-nsk [51]

Answer:

x = 32800

Step-by-step explanation:

56 × 328 + 162 × 44 + 166 × 44 - x = 0

18368 + 7128 + 7304 − x = 0

32800 - x = 0

-x = -32800

x = 32800

8 0

1 year ago

Read 2 more answers

PLEASE HELP AND ANSWER RIGHT AWAY! I'M TERRIBLE AT MATH!

Free_Kalibri [48]

$1 \frac{1}{2} = \frac{3}{2}\\\\2 \frac{1}{2} = \frac{5}{2}\\\\\\\\\frac{3}{2} \times \frac{5}{2} = \frac{3\times 5}{2\times 2} = \huge{\boxed{\frac{15}{4}=3\frac{3}{4}}}$

7 0

2 years ago