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1 year ago

Help asap!!! 50 points total if u get big brain! elect the expressions that are equivalent to 10 + 2x + 5y + 3x.

Mathematics

2 answers:

SCORPION-xisa [38]1 year ago

5 0

Answer:

D.5(x + y + 2) and E).5x + 5y + 10

Step-by-step explanation:

10 + 2x + 5y + 3x.

combine x : (2x+3x=5x)

Factor 5

5(x + y + 2)

5*x=5x

5*y=5y

5*2=10

andrew-mc [135]1 year ago

4 0

Answer:

D and E

Step-by-step explanation:

Explanation is in photo

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Write each equation in slope-intercept form. underline the slope and circle the y-intercept in each equation 5x+3y=30

faust18 [17]

Answer:

The slope is

The y-intercept is

−

Explanation:

−

is the standard form for a linear equation. The slope-intercept form is

, where

is the slope, and

is the y-intercept. To convert from standard form to slope-intercept form, solve the standard form for

−

Subtract

from both sides of the equation.

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Divide both sides by

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graph{y=5/3x-10 [-10, 10, -5, 5]}

4 0

2 years ago

Read 2 more answers

Help me please i will give brainliest :)

s2008m [1.1K]

Answer:

y = x - 10

Step-by-step explanation:

3 0

2 years ago

Kira walks 8hole and one half blocks in 17 minutes.if kira continues to walk at the steady pace, how many blocks will she walk e

ZanzabumX [31]

8 1-and-a-half blocks would be 12 blocks, and so 12/17, because 12 blocks in 17 mins., so you divide 12 by 17 to get ---- blocks per minute, which is 12/17 as a fraction, or approx. 0.705882353 blocks per minute.

7 0

2 years ago

Please help I’ve been stuck on it forever. :(

slava [35]

Answer:

$31.37 is the sale price

Step-by-step explanation:

All you need to do to find the discount price (sale price) is multiply the price of the item by the decimal form of the percentage.

1. Store A. 40% off the original price of $159.99

$(159.99 * .40) = 63.996$

63.996 is the discount price we are looking for

2. Store B. 25% off the original price of $130.50

$(130.50 * .25) = 32.625$

32.625 is the discount price we are looking for

3. Now to find their difference you just subtract the two values.

$($63.996 - $32.625) = $31.371$

The discount price (sale price) is $31.371

6 0

3 years ago

A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Portland. The stu

iVinArrow [24]

Answer:

$-0.061 < P_1 -P_2< 0.025$

Step-by-step explanation:

Give data:

$n_1 = 350$

$n_2 =250$

$x_1 = 23$

$x_2 = 21$

$\hat{P} 1 = \frac{x_1}{n_1} = \frac{23}{350} = 0.066$

$\hat{P} 2 = \frac{x_2}{n_2} = \frac{21}{250} = 0.084$

for 95% confidence interval

$\alpha = 1 - 0.95 = 0.05 and \alpha/2 = 0.025$

$z_{\alpha/2} = 1.96$ from standard z- table

confidence interval for P_1 and P_2 is

$\hat{P} 1 - \hat{P} 2 \pm z_{\alpja/2} \sqrt{\frac{\hat{P} 1(1-\hat{P} 1)}{n_1} +\frac{\hat{P} 2(1-\hat{P} 2)}{n_2}}$

$(0.066 - 0.084) \pm 1.96 \sqrt{\frac{0.066(1-0.066)}{350} +\frac{0.084(1-0.084)}{250}}$

$-0.018 \pm 0.043$

confidence interval is

$-0.018 - 0.043 < P_1 -P_2$

$-0.061 < P_1 -P_2< 0.025$

7 0

2 years ago