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kap26 [50]
3 years ago
10

Solve each equation 2n-5=21

Mathematics
1 answer:
aleksklad [387]3 years ago
4 0
2n-5=21
add 5 to both sides
2n=26
divide both sides by 2
n=13

I hope I helped! :)
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Grandpa Gump is 63 years old his age is 2 years less than five times age of Billy, how old is Billy
7nadin3 [17]


Billy's age= x

5x + 2 = 63
5x = 65
x = 13

Billy is 13 years old

6 0
3 years ago
@mehek14
gayaneshka [121]
X=cost per hamburgurs
y=cost per hot dog

200x+150y=1450
200x+250y=1750

we can multiply first equation by -1 and add to 2nd

-200x-150y=-1450
<u>200x+250y=1750 +</u>
0x+100y=300

100y=300
divide both sides by 100
y=3

sub back

200x+150y=1450
200x+150(3)=1450
200x+450=1450
minus 450 both sides
200x=1000
divide both sides by 200
x=5


the cost of a hamburgur is $5
the cost of a hot dog is $3
8 0
3 years ago
Read 2 more answers
Do you know the answer? HELP?
Georgia [21]
V=LWH
if legnth AND width AND height are dobuled
V=2L2W2H
V=2*2*2LWH
V=8LWH

weight increases by 8 times
0.3 time s8=2.4

answer is 2.4lb
8 0
3 years ago
Find the indicated area under the curve of the standard normal​ distribution; then convert it to a percentage and fill in the bl
galben [10]

Answer:

95%

Step-by-step explanation:

About 95% of the area is within two standard deviation in standard normal distribution. This can be explained by finding the probability within 2 standard deviation using standard normal distribution.

P(z1<Z<z2)=P(-2<Z<2)

P(-2<Z<2)=P(-2<Z<0)+P(0<Z<2)

P(-2<Z<2)=0.4772+0.4772

P(-2<Z<2)=0.9544

Thus, About 95% of the area is between z2 and z2

4 0
3 years ago
(1,-7); slope=-1 whats the answer please
Anettt [7]

Slope = -1

and it goes through (1, -7)

7 0
3 years ago
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