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mina [271]
4 years ago
12

What is 1/3 of twenty one pounds

Mathematics
1 answer:
xz_007 [3.2K]4 years ago
3 0
All you have to do is 21 ÷ 3 which is 7. If it was 2/3 then you would do the same thing but multiply 7 by 2 which is 14.
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What are the x and y intercepts of the graph y=x^2+7x+12
koban [17]

Answer:

x-intercepts are (-3,0) and (-4,0).

y-intercept is (0,12).

Step-by-step explanation:

x-intercept is a point where the value of y is zero.

y-intercept is a point where the value of x  is zero.

Given equation is :

y=x²+7x+12

put x=0 in given equation to find y-intercept.

y=(0)²+7(0)+12

y= 0+0+12

y= 12

hence, y-intercept is (0,12).

put y=0 in given equation to find x-intercept.

0=x²+7x+12

split the middle term of above equation to make the equation into two groups such that the sum of two numbers should be 7 and their product be 12.

x²+3x+4x+12=0

making two groups and taking common out:

x(x+3)+4(x+3)=0

take (x+3) common,

(x+3)(x+4)=0

x+3=0 or x+4=0

x=-3 or x=-4

hence, x-intercepts are  (-3,0)  and (-4,0).

5 0
3 years ago
At a certain time of the day, a child whose height is 40 inches casts a shadow that is 26 inches long. The child's father casts
mart [117]
The father is 88.4 inces x=88.4 in
7 0
4 years ago
Algebraically determine the zeros of the quadratic function g(x)= x^2+7x+12. Show all work please
Alinara [238K]

Answer:

x = - 4, x = - 3

Step-by-step explanation:

To find the zeros equate f(x) to zero, that is

x² + 7x + 12 = 0

To factorise the quadratic

Consider the factors of the constant term (+ 12) which sum to give the coefficient of the x- term (+ 7)

The factors are + 4 and + 3, since

4 × 3 = 12 and 4 + 3 = 7, hence

(x + 4)(x + 3) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 4 = 0 ⇒ x = - 4

x + 3 = 0 ⇒ x = - 3

5 0
4 years ago
Xavier and Bobby each receive a salary check every week. They combine their checks in one account. Their account has $100 after
Studentka2010 [4]

Answer:

Time should be plotted on the horizontal X - axis.

Step-by-step explanation:

Xavier and Bobby each receive  a salary check every week. They combine their checks in one account. Their account has $100 after 2 weeks and $300 after 6 weeks.

In a graph showing the relationship of amount in their account versus time, time should be plotted on the horizontal X - axis.

5 0
3 years ago
Convert 15 meters per second into kilometers per hour.
Ksivusya [100]
Answer= 54 kilometers per hour is the answer
6 0
3 years ago
Read 2 more answers
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