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Mnenie [13.5K]
3 years ago
8

Y varies directly with x. If y=3 when x=4, find y when x=20.

Mathematics
1 answer:
mina [271]3 years ago
8 0
X=15

Since 20/4 is 5 and 5•3 is 15
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Salma and jared each threw 5 darts at the target shown. Salma scored 19 points by landing 2 darts in A and 3 in B.How many point
lara31 [8.8K]

Answer:

5

Step-by-step explanation:

Salma and Jared each threw 5 darts at the target shown. Salma scored 19 points by landing 2 darts in A and 3 in B. Jared scored 17 points by landing 1 dart in A and 4 in B. How many points are given for a dart landing in A?

this can be solved using simultaneous equation. Two equations can be formed from the question

2a + 3b = 19  equation 1

1a + 4b = 17    equation 2

Multiply equation 2 by 2

2a + 8b = 34  equation 3

Subtract equation 1 from 3

5b = 15

divide both sides of the equation by 5

b = 3

Substitute for b in equation 1

2a + 3(3) = 19

2a = 9 = 19

collect like terms

2a = 10

divide both sides of the equation by 2

a = 5

6 0
3 years ago
-1/2 + 1 1/2 + 3 - n
GREYUIT [131]

Answer:

The answer all together would be 5 minus n.

Step-by-step explanation:

a negative and a positive equals a positive so -1/2 + 1 1/2 would equal 2 and 2 + 3 equals 5. Then, the remaining numbers are 5 and n. The final answer is 5 minus n because n is unknown.

4 0
3 years ago
Which numbers has a sum of zero
zubka84 [21]

Answer:

prob -3

Step-by-step explanation:

The number 0 is called the additive identity because when you add it to a number, the result you get is the same number. For example, 4 + 0 = 4. Any two numbers whose sum is zero, such as 3 and -3, because 3 + (-3) = 0.

6 0
3 years ago
Read 2 more answers
Just need an answer ASAP to pass this class.
svlad2 [7]

X=11. Bisects means the angles on both sides of the line are equal, so 4x-16=2x+16 then solve for x

8 0
3 years ago
Read 2 more answers
Pacturing Polynomials! GCH
grin007 [14]
Gross pay per days is 5h+8 dollars
Explanation:

we are given
total gross pay =35h+56 dollars
total number of days =7
we know that
gross pay per day = ( total gross pay)/(total number of days)
we can plug values
gross pay per day is

7 0
3 years ago
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