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2 years ago

Y=−5x2+ 6x− 3 y=−4x− 3 using elimination or subsutution

Mathematics

2 answers:

Elena-2011 [213]2 years ago

4 0

Step-by-step explanation:

My math is terrible but I think u should eliminate and substitute.

Irina-Kira [14]2 years ago

3 0

I think the answer is:2x-4y=13

START BY USING BODMAS

Brackets
of
division
multiplication
addition
subtraction

y=-(10)+6x-3y=-4x-3

{3+10=13}

{3y+y=4y}

{6x-4x=2x}

4y=+2x-13

=2x-4y=13

I'M NOT SURE OF THE ANSWER THOUGH

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Simplify, if x = 2 and y = -1: 3(y + 2)^2 + 3x

svet-max [94.6K]

Answer:

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

3(y + 2)² + 3x

x = 2

y = -1

Step 2: Evaluate

Substitute: 3(-1 + 2)² + 3(2)
Add: 3(1)² + 3(2)
Exponents: 3(1) + 3(2)
Multiply: 3 + 6
Add: 9

5 0

3 years ago

Can I have workings out plz x

mixer [17]

Answer:

pretty sure the answer is 432 cm2 not sure im in a rush

Step-by-step explanation:

8 0

2 years ago

Write 46 over 74 in simplest form

deff fn [24]

$\hbox{The GCF \rightarrow2}$

$\frac{46\div2}{74\div2} \\ \\ \bold {\boxed{{\pmb{ \frac{23}{37} }}}}$

3 0

3 years ago

Danielle runs 1/5 of a mile in 4.5 minutes. if she continues at the same speed, how long will it take her to run two miles?

motikmotik

(1/5) / 4.5 = 2 / m....1/5 mile to 4.5 minutes = 2 miles to m minutes
cross multiply
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4 0

3 years ago

Please answer thank you

Alchen [17]

-x - 9 $\geq 5$

You want to get x by itself.

First subtract 9 from both sides of the equation.

-x - 9 $\geq 5$
+9 +9

-x $\geq 14$

Then divide -1 on both sides.

-x/-1 $\geq 14/-1$

I'm pretty sure when you divide a negative number when solving inequalities, you switch the sign.

x $\leq 5$

8 0

2 years ago