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2 years ago

Guys Help me Does (4, 7) make the equation y = 2x + 7 true?

Mathematics

2 answers:

zimovet [89]2 years ago

6 0

Answer:

Tue equation is

y=2x+7

So, the answer is

(2,7)

And (4,7) is wrong

natka813 [3]2 years ago

3 0

Answer:

false

Step-by-step explanation:

x=4andy=7

2×4+7 isnot equal to 7

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3 years ago

What is the area of the real object that the scale drawing models?

Kruka [31]

Answer:

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Step-by-step explanation:

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3 years ago

Jade is thinking of a number. 3/4 of 200 is the same as 1/8 of her number. What number is she thinking of?

lorasvet [3.4K]

Answer:

1200

Step-by-step explanation:

3/4 of 200 = 150

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5 0

3 years ago

Read 2 more answers

Jay wants to make a box, with no lid (or top), out of a 10" x 6" rectangular piece of cardboard. If Jay cuts squares with dimens

LiRa [457]

Answer:

a. $V(x)=x(10-2x)(6-2x)$

b. $S(x)=4(15-x^2)$

Step-by-step explanation:

Dimensions of rectangular piece of cardboard= $10\times 6$

According to question

Length of box,l=10-2x

Breadth of box,b=6-2x

Height of box,h=x

Volume of box= $l\times b\times h$

Substitute the values in the formula

Volume of box= $x(10-2x)(6-2x)$

$V(x)=x(10-2x)(6-2x)$

b.Surface area of box= $2(b+l)h+lb$

Because the box has no lid

Substitute the values in the formula

Surface area of box= $2(10-2x+6-2x)x+(10-2x)(6-2x)$

Surface area of box= $2(16-4x)x+60-20x-12x+4x^2$

Surface area of box= $32x-8x^2+60-32x+4x^2$

Surface area of box= $60-4x^2=4(15-x^2)$

Surface area of box, S(x)= $4(15-x^2)$

4 0

3 years ago

What does pq equal and how do I find it???

Kay [80]

Use trigonometry.

sinQ = 14/50 = 0.28
-> angle Q = sin^-1(0.28) = approx 16 degrees

-> cosQ = A/H -> cos16 = PQ/50

=> PQ = 50*cos16 = approx 48.06

So yea.

3 0

3 years ago