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3 years ago

Your mother asked you to turn the oven down to 325°F. This is 75°F less than it was. What was the original temperature?

Mathematics

2 answers:

navik [9.2K]3 years ago

5 0

The original was 400f
325+75=400

DanielleElmas [232]3 years ago

4 0

The original was 400 F
325 + 75= 400

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3 years ago

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Alexander says that 3x + 4y is equivalent to (3)(4) + xy because of any order, any grouping. Is he correct why or why not

snow_lady [41]

Answer:

Alexander is incorrect because the expressions are not equivalent.

Step-by-step explanation:

If the expression is evaluated for any value of x, y; the result will not be same.

For instance, let assume x = 1 and y = 2

3x + 4y = 3 + 4 = 7

(3)(4) + xy = (3)(4) + (1 * 2) = 12 + 2 = 14

So, the expressions are not the same and Alexander is incorrect.

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3 years ago

Simplify the expression (2^-4)^-2

Vedmedyk [2.9K]

Answer:

256

Step-by-step explanation:

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2 years ago

I need to know x . if you could also explain that would be nice

defon

Answer:

x = 7.5

Step-by-step explanation:

Since the midsegment and the third segment of the triangle are parallel to each other, therefore,

$\frac{8 + 10}{8} = \frac{6 + x}{6}$

$\frac{18}{8} = \frac{6 + x}{6}$

$\frac{9}{4} = \frac{6 + x}{6}$

Cross multiply

$9*6 = 4(6 + x)$

$54 = 24 + 4x$

Subtract 24 from each side

54 - 24 = 4x

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4 0

3 years ago

The martinez family has a walkway around their swimming pool. the area of the walkway can

DiKsa [7]

The width of the walkaway be 4 feet.

<h3>What is Discriminant Formula?</h3>

The discriminant formula is used to determine the nature of the roots of a quadratic equation. The discriminant of a quadratic equation $ax^{2} +bx+c=0$ is D = $b^{2} -4ac$

If D > 0, then the equation has two real distinct roots.

If D = 0, then the equation has only one real root.

Given that: $Area\; of \;walkway,\; a(w)\;= 4w^{2} + 100 w$

also, area of walkaway = 464 square feet.

So, $4w^{2} + 100 w =464$

$4w^{2} + 100 w -464=0$

Using Discriminant method,

a=4, b=100, c=-464

$w= \frac{-b\pm\sqrt{b^{2}-4ac} }{2a}$

w= $\frac{-100\pm\sqrt{(100)^{2}-4*4*(-464)} }{2*4}$

w= $\frac{-100\pm\sqrt{17424} }{8}$

So, $w_1= \frac{-100+\sqrt{17424} }{8} \;\;\;\; w_2= \frac{-100-\sqrt{17424} }{8}$

$w_1= \frac{-100+132 }{8} \;\;\;\; w_2= \frac{-100-132}{8}$

$w_1 = 4 \;\;\;\; and \;\;\; w_2= -29$

Hence the width of the walkaway be 4 feet.

Learn more about discriminant formula here:

brainly.com/question/2615966

#SPJ1

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2 years ago