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irina [24]
2 years ago
14

1. Which form shows the slope-intercept form? y = mx +b Ax + By =C y-y1 = m(x-x1)

Mathematics
1 answer:
KatRina [158]2 years ago
4 0

Answer:

y = mx + b

Step-by-step explanation:

b is your y intercept while m is your slope which is just rise over run.

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What is the value of the expression below when a = 3 and b = 7?
svp [43]

Answer:

42

Step-by-step explanation:

9^2*7-2*7

56-14

42

I hope this helps.

6 0
3 years ago
Read 2 more answers
To which graph does the point (−1, 4) belong?
Verdich [7]
Insert x = -1 and y = 4 into the first inequality:-
4 <= -(-1) + 4 = 5  

so this fits


Its A
6 0
3 years ago
Read 2 more answers
80 items were sold, bringing in $6,900 in receipts. Some items were sold at a discount for $75 each and some others were sold at
Leni [432]

Answer:

50 items were sold for $75

35 items were sold for $90

Step-by-step explanation:

75 x 50 = 3750

90 x 35 = 3150

3750 +3150 = 6,900

4 0
2 years ago
A plant grew 2cm everyday for "d" days. How much did it grow? (Expressions)
balandron [24]

on day one height=2cm

day 2 height = 4cm=2+2 cm

day 3 height =6 cm =4+2 cm

let height of plant after d days is given by H

so H = 2d cm

6 0
3 years ago
A soft-drink machine is regulated so that the amount of drink dispensed is approximately normally distributed with known standar
Vsevolod [243]

Answer:

This is  a reasonable decision because the sample size has no effect on the 90% confidence interval

Step-by-step explanation:

90% confidence interval

larger sample size = 20

condition : sample mean ( x-bar ) is the same for both samples

<em>This is  a reasonable decision because the sample size has no effect on the 90% confidence interva</em>l

<u>from condition 1 :</u>

Amount of drink dispensed is normally distributed with known standard deviation , given a random sample of n drinks and the sample mean at a confidence interval of 90%

<u>for condition 2 :</u>

sample size = 20

mean = 2.25 ( assumed value )

std = 0.15 ( assumed value )

Z = 1.645 ( Z-value )

determine the 90% confidence interval

= mean ± z \frac{std}{\sqrt{n} }

= 2.25 ± 1.645 \frac{0.15}{\sqrt{20} }

= 2.25 ± 0.0335 = ( 2.2835 , 2.2165 )

7 0
3 years ago
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