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3 years ago

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The equation of the graphed line is x+2y=5. What is the x-intercept of the graph? A coordinate plane with a line passing through

(negative 5, 5) and (5, 0).
Answer choices
A) 2
B) 2.5
C) 5
D) 5.5

1 answer:

Artyom0805 [142]3 years ago

5 0

Answer:

the answer is... a

Step-by-step explanation:

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Alla [95]

Answer:

She did not use the reciprocal of the divisor.

She added the numerators.

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Find the value of k by<br>quardractic equation two real and equal roots<br>5x - 2kx +20=0

kotegsom [21]

Answer:

k = +10 or -10

Step-by-step explanation:

It's given in the question that the roots of the eqn. are real and equal. So , the discriminant of the eqn. should be equal to 0.

$= > {b}^{2} - 4ac = 0$

$= > {( - 2k)}^{2} - 4 \times 5 \times 20 = 0$

$= > 4 {k}^{2} - 400 = 0$

$= > 4( {k}^{2} - 100) = 0$

$= > {k}^{2} - 100 = 0$

$= > k = \sqrt{100} = + 10 \: or \: - 10$

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3 years ago

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Which term is a term in this expression?<br><br> A. x+4<br> B. -7<br> C. -3<br> D. -3x

svp [43]

Answer: -3x is a term

Step-by-step explanation: Any number that has a variable after it is a term. Another way to look at it is any grouping of a number and a variable. If the number stands alone, it's not a term, and if it is being added to something, it is an equation.

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3 years ago

Andrea sells photographs at art fairs. She prices the photos according to size: small photos cost $10, medium photos cost $15, a

Talja [164]

Answer: she must sell 6 large photos and 6 small photos

Step-by-step explanation: and how I knew that is I multiplied 6 40 times and that gives you 240 and if you multiply 6 ten times that gives you 60 so 240 plus 60 is $300

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2 years ago

If f(x) = 2x2 + 1, what is f(x) when x = 3? a.1 b.7 c.13 d.19

prohojiy [21]

<u>Answer:</u>

The value of f(x) = $2x^2 + 1$ when x=3 is 19, hence the correct option is ‘d’.

<u>Solution:</u>

A two degree polynomial equation is given in the question.

The equation is:

$F(x)=2 x^{2}+1$

We need <em>to find the value of f(x) when the value of x is 3. </em>

To solve a question like this we have to substitute the given value of x in the given equation and then simplify it.

Now let's substitute the value of x in the given equation.

$F(x)=2(3)^{2}+1$

First we square the number 3 and then multiply it with 2 and then add 1.

This is done because of the BODMAS rule, in which multiplication is given higher preference as compared to addition.

On solving the equation we get,

F(x)=2×9+1

F(x)=18+1

F(x)=19.

Therefore the value of f(x) when x=3 is 19.

Hence the correct option is ‘d’.

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