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4 years ago

Simplify the expression. (5x2 - x - 7) + (2x2 + 3x + 4)

Mathematics

1 answer:

kifflom [539]4 years ago

5 0

Answer:

$7x^2-2x-3$

Step-by-step explanation:

First get rid of the parenthesis

$5x^2-x-7+2x^2+3x+4$

Next simplify the variables

$7x^2-x-7+3x+4$

$7x^2-2x-7+4$

$7x^2-2x-3$

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An aeroplane takes 4 hours to travel a distance of 440 0km. Another aeroplane travels at a speed which is 100km per hour less th

FrozenT [24]

Answer:

7480 hours

Step-by-step explanation:

440 - 100 = 340

LCM of 440 and 340

440 = 2 × 2 × 2 × 5 × 11

340 = 2 × 2 × 5 × 17

LCM = 2 × 2 × 2 × 5 × 11 × 17

LCM = 7480

4 0

3 years ago

16. Terry has a monthly mortgage payment of $979. Her annual property taxes are

maw [93]

Answer:

$228.67

Step-by-step explanation:

Given that:

Terry has a monthly mortgage payment of $979.

Terry's annual taxes are $1200 per year. That implies that his escrow each month require to posses 1/12 of that amount.

i.e 1/12 × 1200 = $100 per month.

For his homeowner's insurance which is $800 per year,

His escrow account each month is = 1/12 × 800 = $66.67

PMI = $62 per month.

Thus: The amount that is deposited into Terry's escrow account each month is the sum total of $100 + $ 66.67 + $62 = $228.67

6 0

3 years ago

Math teacher doesn't explain this very well, please help solve.

igomit [66]

a) Since we know they have equal perimeters, we can set them equal to each other. First, let's recap the perimeters of squares and triangles (s = side):
$P_s = 4s/tex] [tex]P_t = 3s=s+s+s$

Now, we can set up our equation:
$4(x-3) = 8 + x + x$
$4x-12 = 8+2x$

We can solve for x:
$2x-12=8$
$2x = 20$
$x = \frac{20}{2} = 10$

So, x = 10.

b) We known the perimeter formulas and we have what x is. So, let's just plug and chug.
Square:
$4(x-3) = 4(10-3) = 40-12 = 28$
So, the perimeter of the square is 28 units².
Since their perimeters are equal the perimeter of the triangle is also 28 units²

3 0

4 years ago

Select the correct answer from each drop-down menu. Trapezoid PQRS be inscribed in a circle because the .

prisoha [69]

Trapezoid PQRS be inscribed in a circle because its opposite angles are supplementary.

According to the statement

we have given that the Trapezoid PQRS be inscribed in a circle and we have to find the correct answer from the given data.

So, For this purpose, we know that the

The inscribed quadrilateral conjecture states that the opposite angle of any inscribed quadrilateral are supplementary to each other. That is, they have a sum of 180 degrees.

From the diagram given,

the opposite angles in the trapezoid are 115 and 65 degree.

So, after adding it become

115 + 65 = 180 degrees.

Therefore, we can conclude that: trapezoid QPRS can be inscribed in a circle because its opposite angles are supplementary.

So, Trapezoid PQRS be inscribed in a circle because its opposite angles are supplementary.

Learn more about inscribed quadrilateral conjecture here

brainly.com/question/12238046

Disclaimer: This question was incomplete. Please find the full content below.

Question:

Select the correct answer from each drop-down menu.

Trapezoid PQRS

4650

be inscribed in a circle because the

Reset

115⁰

65°

For more understanding please see the image below.

#SPJ4

3 0

2 years ago

Indicate the answer choice that best completes the statement or answers the question Refer to the table that shows the highway f

denis23 [38]

Answer:

d) 33.1 miles per gallon

Step-by-step explanation:

Mean = sum/ number

Mean= (48+25+35+34+33+37+32+34+23+30)/10 = 33.1

6 0

3 years ago