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Elena L [17]
3 years ago
11

Help with both please. show work

Mathematics
1 answer:
oee [108]3 years ago
8 0

Answer:

1.  y = x + 7

Step-by-step explanation:

Find the slope

Choose two points and find the slope using rise/run

(1,8) (2,9)

9-8/2-1

1/1 = 1 = m (slope)

Find b using the slope and one point

m=1   (1,8)

8 = 1 (1) + b

8 = 1 + b

7 = b

Fill in m and b into y = mx + b

y = 1x + 7

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Jackie bought a 3-pack of tubes of glue. She used 0.27 ounce of the glue from the 3-pack
DiKsa [7]

Answer:

The answer is (A)

Step-by-step explanation:

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3 0
3 years ago
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If a cube of metal measures 3 cm on each side and has a mass of 216 g what is the density of the metal
ohaa [14]
The formula of density is mass / volume.
So, the volume is equal to the area of the cube by the total height, so the area of the cube is 3x3= 9, and this result multiplied by the height, 9x3 = 27.
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4 0
3 years ago
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The sides of a square have length s.<br> 4 Write a formula for the perimeter P of the square.
OLga [1]

Answer:P= s(4)

Step-by-step explanation:

8 0
3 years ago
Help!! help!! help!! help!! help!! help!! help!! help!! help!!
oksian1 [2.3K]

Answer:

<em>(8.21, -20.79)</em>

Step-by-step explanation:

Given the simultaneous equation;

\frac{a}{b} - \frac{b}{2} = 10\\a - b = 29

From 2;

a = 29 + b ....3

Substitute 3 into 1;

\frac{29+b}{b} - \frac{b}{2}  = 10\\\frac{2(29+b)-b^2}{2b} = 10\\\frac{58+2b-b^2}{2b} = 10\\58+2b-b^2 = 20b\\b^2-2b-58 = -20b\\b^2-2b+20b -58 = 0\\b^2+18b-58 = 0\\

Factorize

b = -18±√18²-4(-58)/2

b = -18±√324+232/2

b = -18±√556/2

b = -18±23.58/2

b = -18-23.58/2 and -18+23.58/2

b = -41.58/2 and 5.58/2

b = -20.79 and 2.79

Since a = 29 + b

when b = -20.79

a = 29 - 20.79

a = 8.21

<em>Hence the solution to the system of equation is (8.21, -20.79)</em>

7 0
3 years ago
50<br> Σ (4n - 1) = [? ]<br> 1
Kay [80]

Answer:

5050

Step-by-step explanation:

3 0
3 years ago
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