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3 years ago

In the equation 4y +-9 =-36, is the solution y = -4 correct? True or false?

Mathematics

2 answers:

Artist 52 [7]3 years ago

6 0

Answer: False
Explanation: 4(-4) + (-9)=-36, 4•-4= -16 - 9= -25 not -36

saveliy_v [14]3 years ago

3 0

Answer: False because the answer is -6.75

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Find the volume height is 3 yards length is 3 yards and width is 2 yards

motikmotik

Answer:

6yd³

Step-by-step explanation:

V=lwh/3

V=3x2x3/3

V=18/3

V= 6yd³

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3 years ago

Caden states that n^2 +3n + 2n is an equivalent expression to 6n. Why is Caden's statement incorrect?

malfutka [58]

$\begin{gathered} \text{The simplification of n}^2+3n+2n\text{ is:} \\ i)n^2+5n \\ By\text{ collecting common term, this can be written in form of:} \\ ii)\text{ n(n+5)} \end{gathered}$

Thus, options A and D hold, from the simplifications above.

Let's consider the validity of the remaining options provided.

$\begin{gathered} \text{For option B)} \\ \text{substitute for n=1 into the expression n}^2+3n+2n,\text{ we have} \\ 1^2+3(1)+2(1)=1+3+2=6 \\ \text{substitute for n=1 into the expression 6n, we have} \\ 6(1)=6 \\ \text{Thus, the expression n}^2+3n+2n\text{ is equivalent to 6n, for n=1} \end{gathered}$ $\begin{gathered} \text{For option C)} \\ \text{The expression n}^2+3n+2n\text{ does not simplify to 7n} \end{gathered}$ $\begin{gathered} \text{For option E)} \\ \text{substitute for n=4 into the expression n}^2+3n+2n,\text{ we have:} \\ 4^2+3(4)+2(4)=16+12+8=36 \\ \text{substitute for n=6 into the expression 6n, we have:} \\ 6(4)=24 \\ \text{Thus, the two(2) expressions are not equivalent to each other, for n=4} \end{gathered}$ $\begin{gathered} \text{For option F)} \\ \text{substitute for n=3 into the expression n}^2+3n+2n,\text{ we have:} \\ 3^2+3(3)+2(3)=9+9+6=24 \\ \text{substitute for n=3 into the expression 6n, we have:} \\ 6(3)=18 \\ \text{Thus, the two(2) expressions are not equivalent to each other, for n=3} \end{gathered}$

Hence, the correct options that apply are options A, D, E and F

7 0

1 year ago

Plz help!

OLga [1]

Answer:

a) 3x²-4x-15

b) binomial

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3 years ago

Harper surveyed 380 of the students in her school about their favorite color. 323 students said their favorite color was red. Wh

Levart [38]

Can anyone help me with my questions

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3 years ago

Read 2 more answers

Which equation represents a line which is parallel to the line 2x + 3y = -6?

Burka [1]

Answer:

y = 2/3 x - 4/3 - so the slope is 2/3. The slope of a line parallel to it is also 2/3.

Step-by-step explanation:

8 0

3 years ago