3 years ago

X+y=3 & 8x+y=4 elimination need help

Mathematics

1 answer:

aivan3 [116]3 years ago

7 0

Hopefully you can read cursive writing (: hope this helps!

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Pls help Evaluate the expression for v = 0. 5 + 2v =

Tatiana [17]

Answer:

PLZ MARK AS BRAINLIEST

Step-by-step explanation:

5 + 2v =

5 + 2(0) =

5 + 0 =

7 0

3 years ago

8) Leanne loved to chew gum. She managed to chew 112 pieces of gum in 14 days. At this rate, how much gum would she chew in 20 d

ExtremeBDS [4]

112/14=x/20
Cross multiply.
14x=2240
x=160

Therefore, at this rate, Leanne would chew 160 pieces of gum in 20 days.

3 0

3 years ago

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Find [4(cos15° + isin15°)]^3 and express it in a + bi form.

arsen [322]

Answer:

see explanation

Step-by-step explanation:

Using De Moivre's theorem

Given

[ 4(cos15° + isin15° ) ]³, then

= 4³ [ cos(3 × 15°) + isin(3 × 15°) ]

= 64 (cos45° + isin45° )

= 64 ( $\frac{\sqrt{2} }{2}$ + $\frac{\sqrt{2} }{2}$ i )

= 64 ( $\frac{\sqrt{2} }{2}$ (1 + i) )

= 32 $\sqrt{2}$ (1 + i)

= 32 $\sqrt{2}$ + 32 $\sqrt{2}$ i

3 0

3 years ago

Find the area of a circle with radius of 6 inches. (Use 3.14 for 1.)

Schach [20]

Answer:

$\pi {r}^{2}$

$\pi {6}^{2} \\ 113.1$

6 0

3 years ago

A restaurant earns $1073 on Friday and $1108 on Saturday. Write and solve an equation to find the amount xx (in dollars) the res

julia-pushkina [17]

Money earned by restaurant on Friday=$1073

Money earned by restaurant on Saturday=$1108

Let Money earned by restaurant on Sunday=$x

Average=$1000

$\text { average}=\frac { sum of all the observation}{total number of observation}$

Number of observation=3

⇒ 3× 1000=1073+1108+x

⇒3000= 2 181+x

⇒3000-2181=x

⇒x=819

The restaurant needs to earn on Sunday to average $1000 per day over the three-day period=$819

6 0

3 years ago

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