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2 years ago

What is the value of 3×^2+4y^2 if x=2 y=1,and z=-3

Mathematics

1 answer:

lapo4ka [179]2 years ago

6 0

3(2)^2+4(1)^2
3x4+4
12+4
16

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8 to 11 do it with equations thx

Alenkasestr [34]

Answer:

Step-by-step explanation:

8. $4\geq x+\frac{3}{4}$

$4(4\geq x+\frac{3}{4} )$

$16\geq 4x + 3$

$-3$ $-3$

$13\geq 4x$

$\frac{13}{4}\geq \frac{4x}{4}$

$\frac{13}{4} \geq x = x\leq \frac{13}{4}$

$x\leq \frac{13}{4}=3.25$

9. $x-3\leq -8$

$+3$ $+3$

$x\leq -5}$

10. $4\leq x-7$

$+7$ $+7$

$11\leq x=x\geq 11$

11. 6.9 < x - 2.3

+ 2.3 + 2.3

9.2 < x = x > 9.2

Hope this helps!

5 0

2 years ago

What is 9847.04 rounded to the nearest hundreth

Ainat [17]

It's already rounded to the nearest hundredth. Hundredth's place is the position of the second digit to the right of to the decimal point.

5 0

3 years ago

Ok if Dan made 1412.42 and Aaron made 1187.92

tankabanditka [31]

First we should calculate the relation between how much they make and the fuel cost so we write

(1412.42+<span>1187.92)/418.91=6.21

So that means that for every 6.21 dollars made 1 dollar of fuel must be deducted so now we calculate what they need to be deducted by:

Dan deduction = 1412.42/6.21= 227.41
Aaron deduction= 1187.92/6.21 = 191.29</span>

7 0

3 years ago

At a school carnival, the diameter of the mat of a trampoline is 12 feet and the diameter of its metal frame is 14 feet. What is

skelet666 [1.2K]

We don't need to know the trampoline diameter, it's a trick

the legnth of the metal fram is the circumference
C=pid
d=14
c=14pi
pi=3.14
c=14*3.14
c=43.96
round
C=44

answer is 44 feet

4 0

3 years ago

Express V in terms of T

Lorico [155]

Answer:

v = $\frac{4t-1}{3}$

Step-by-step explanation:

Given

t = $\frac{3v+1}{4}$ ( multiply both sides by 4 to clear the fraction )

4t = 3v + 1 ( subtract 1 from both sides )

4t - 1 = 3v ( divide both sides by 3 )

$\frac{4t-1}{3}$ = v

3 0

3 years ago