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3 years ago

I NEED HELP ASAP How many solutions does 2x + 6 - 5x = -3 ( x - 2 ) have?

Mathematics

1 answer:

LenKa [72]3 years ago

7 0

It has infinite solutions because when you solve it you will get 6=6

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О с. А о.

timurjin [86]

Answer:

Step-by-step explanation:

To be parallel the slopes must be equal

4x-3y=15

3y=4x-15

y=(4x-15)/3

so m=4/3

Only line D. has a slope of 4/3

7 0

3 years ago

Read 2 more answers

A bus traveles 150 miles in 2 1/2 hours If the bus travels at a constant rate, how many miles can the bus travel in 4 hours?

Natali [406]

I'm pretty sure that it's 240 miles :)

7 0

3 years ago

A metallurgist has an alloy with 10% titanium and an alloy with 20% titanium. He needs 100 grams of an alloy with 17% titaniu

ser-zykov [4K]

$\bf \begin{array}{lccclll}
&amount&concentration&
\begin{array}{llll}
concentration\\
amount
\end{array}\\
&-----&-------&-------\\
\textit{10\% alloy}&x&0.1&0.1x\\
\textit{20\% alloy}&y&0.2&0.2y\\
-----&-----&-------&-------\\
mixture&100&0.17&17
\end{array}$

now, notice, we use the decimal format for the percent, namely 17% is 17/100 or 0.17 and so on

so.... we know, whatever "x" and "y" is, they must add up to 100 grams
thus x + y = 100

and whatever the concentrated amount is, it must add up to 17 grams for the composition

thus 0.1x + 0.2y = 17

$\bf \begin{cases}
x+y=100\implies \boxed{y}=100-x\\
0.1x+0.2y=17\\
----------\\
0.1x+0.2\left( \boxed{100-x} \right)=17
\end{cases}$

solve for "x", to see how much is needed of the 10% alloy

what about "y"? well, y = 100 - x

4 0

3 years ago

Math help plz need asap

grigory [225]

Answer:

Below

Step-by-step explanation:

Sides that are larger have bigger opposite angles, so smaller sides have smaller opposite angles, so:

Angle R

Angle P

Angle Q

Angle J

Angle L

Angle K

3 0

3 years ago

Don’t get it wrong please

ANEK [815]

Answer:

Step-by-step explanation:

Given

V = πr²h

Rounding to the nearest whole number gives

π ≈ 3

r ≈ 4

h ≈ 6

Then

V = 3 × 4² × 6 = 3 × 16 × 6 = 288 in³

5 0

2 years ago