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2 years ago

Which description is paired with its correct expression?

Mathematics

1 answer:

lisov135 [29]2 years ago

8 0

Answer:

A number is twice as much when put added by 4 to equal 12

2x+4=12

Step-by-step explanation:

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What is the maximum number of possible solutions for the system shown below?

julsineya [31]

$\bf \begin{cases} 3x^2+y^2=4\\[-0.5em] \hrulefill\\ x^2+y=5\implies \boxed{y}=5-x^2 \end{cases} \\\\\\ \stackrel{\textit{substituting \boxed{y} in the 1st equation}}{3x^2+\left( \boxed{5-x^2} \right)^2=4}\implies 3x^2+25-10x^2+x^4=4 \\\\\\ x^4-8x^2+21=0\impliedby \begin{array}{llll} \textit{the degree of this polynomial}\\ \textit{is 4, and by the fundamental}\\ \textit{theorem of algebra, it can}\\ \textit{have \boxed{4} solutions at most} \end{array}$

7 0

3 years ago

Find the solution to the system of equations.

Vikentia [17]

Answer:

Step-by-step explanation:

4 0

2 years ago

Determine the equation of the line that passes through the given points. (If you have a graphing calculator, you can use the tab

siniylev [52]

Answer:

y = -2x

Step-by-step explanation:

It passes through -5, 10 and 5, -10

gradient = Δy/Δx

gradient = -10 - 10 / 5 -- 5

gradient = -20 / 10

gradient = -2

let's use -5, 10 for y = mx + b

10 = -2(-5) + b

10 = 10 + b

b = 10 - 10

b = 0.

the equation of the line is just y = -2x

6 0

1 year ago

What is 2 2/3×3 1/4 as a fraction form

8090 [49]

Answer:

8 2/3

Step-by-step explanation:

2 2/3×3 1/4

Change to improper fractions.

2 2/3=8/3

3 1/4=13/4

8/3x13/4=26/3

=8 2/3

Hope this helps :)

4 0

2 years ago

Read 2 more answers

The quotient of 3 times a number and 7 is 15. Find the number<br> pls help me

Ronch [10]

Answer:

it would be 3 times 35 divded by 7 and that answer would give you 15 as the answer so 35 is your missing number

Step-by-step explanation:

4 0

2 years ago