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3 years ago

What is (7x-5)- (3x-2)

Mathematics

1 answer:

BaLLatris [955]3 years ago

8 0

Answer:

4x-3

Step-by-step explanation:

Multiply the minus sign to lose the brackets

7x-5-3x+2

combine like terms

7x-3x-5+2

Simplify

4x-3 Answer

Hope this helps!

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A store sells two brands of hand lotion. Brand X costs $3.25 for 5 fluid ounces.

olga_2 [115]

Answer:

$\frac{3,25}{5}=0,65 \\$ for brand x for 1 fluid ounces

$\frac{6}{8}=0,75$ for brand y

0,75-0,65=0,1

Brand x costs $0,1 less

Step-by-step explanation:

3 0

2 years ago

Pls help me on this

NARA [144]

The answer is 10% because 10% of 40 is 4

7 0

2 years ago

Assign two variables for each problem, and write the equations. Do not solve.

NemiM [27]

Price of boots is represented as x, price of tennis shoes is represented as y. x-y=44.38 x+y=196.12 Isolate x. (Or y, if you wanted to) x=y+44.38 x=196.12-y Set them equal to each other. y+44.38=196.12-y Solve for y. Then plug it in to either of the two original equations to find x. x=120.24 y=75.86 Note: This is assuming that the boots are more expensive than the tennis shoes. If the tennis shoes are more expensive than the boots, then the prices would be switched. I didn't find this clear in your question.

6 0

3 years ago

find the zeros of 2x^2 - 16x + 27 using the quadratic formula. be sure to simplify the expression. Can someone please show me ho

____ [38]

For a quadratic of the form $f(x)=ax^2+bx+c$ , we have the quadratic formula
$x=\dfrac{-b \pm \sqrt{b^2 -4ac} }{2a}$ ,
where a is the coefficient (number before the variable) of the squared term, b is the coefficient of the linear term, and c is the constant term.

So, given $2x^2-16x+27=0$ , we can get that $a=2, \ b=-16$ , and $c=27$ . We substitute these numbers into the quadratic formula above.

$x=\dfrac{-(-16) \pm \sqrt{(-16)^2 -4(2)(27)} }{2(2)}$

$x=\dfrac{16 \pm \sqrt{(256 -216)} }{4}$

$x=\dfrac{16 \pm \sqrt{40} }{4}$

$x=\dfrac{16 \pm 2\sqrt{10} }{4}$

$x=4+ \frac{\sqrt{10}}{2}, \ x=4- \frac{\sqrt{10}}{2}$

This is our final answer.

If you've never seen the quadratic formula, you can derive it by completing the square for the general form of a quadratic. Note that the $\pm$ symbol (read: plus or minus) represents the two possible distinct solutions, except for zero under the radical, which gives only one solution.

8 0

3 years ago

What is theperature of this object

Andrei [34K]

Answer:

59-60 F and 15 C

Step-by-step explanation:

Hope this helps!

A brainlist would be appreciated! I'm almost an expert!

6 0

2 years ago