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3 years ago

What is -10x+9x+14-1=4

Mathematics

1 answer:

ch4aika [34]3 years ago

3 0

-10x+9x+14-1=4

then you add similar elements which gives you -x+14-1=4

next you subtract the numbers 14-1=13

then subtract 13 from each side -x+13-13=4-13

then you simplify -x = -9

divide both sides my negative 1 -x/-1 = -9/-1

and then you get the answer: x=9

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Determine whether the polynomial below can be factored into perfect squares. If so, factor the polynomial. Otherwise, select tha

Natasha2012 [34]

Answer:

C. $(4x-8)^2$

Step-by-step explanation:

We need to determine whether the given polynomial $16x^2-64x+64$ can be factored into perfect squares. If so, factor the polynomial. Otherwise, select that it cannot be factored into a perfect square.

$16x^2-64x+64$

$=16x^2-32x-32x+64$

$=16x(x-2)-32(x-2)$

$=(16x-32)(x-2)$

$=16(x-2)(x-2)$

$=16(x-2)^2$

$=4^2(x-2)^2$

$=(4(x-2))^2$

$=(4x-8)^2$

Hence final answe is choic C. $(4x-8)^2$

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4 years ago

Which of the following expressions represent 15% tip on a $20 meal? Which represents the total bill? **Select all that apply**.

kifflom [539]

Answer:

15/100 * 20, because the meal is 20 dollars and to find the percent of something you divide it with 100 so you will divide 15 with 100 and you’ll get 0.15. Then you will times it with the amount the meal cost because thats the charge. So 0.15•20 and you’ll get $3. A 15% tip for a $20 meal is $3.

4 0

3 years ago

A meatball recipe calls for 2 cups of breadcrumbs for every 5 cups of ground meat. How many cups of breadcrumbs are required for

Ghella [55]

Answer:

1/4 cup for every cup

Step-by-step explanation:

If you divide 2 by 5, you would get this answer. Sorry if it's wrong!

6 0

3 years ago

The conjugate of (2+i)²/3+i, in the form of a+ib, is

goblinko [34]

Given that

(2+i)²/(3+i)

On multiplying both numerator and the denominator with (3-i) then

⇛ [(2+i)²/(3+i)]×[(3-i)/(3-i)]

⇛ [(2+i)²(3-i)]/[(3+i)(3-i)]

⇛ [(2+i)²(3-i)]/[(3²-i²)

⇛ [(2+i)²(3-i)]/(9-i²)

⇛ [(2+i)²(3-i)]/[9-(-1)]

Since ,i² = -1

⇛ [(2+i)²(3-i)]/(9+1)

⇛ [(2+i)²(3-i)]/10

⇛ [{2²+i²+2(2)(i)}(3-i)]/10

⇛ (4+i²+4i)(3-i)/10

⇛ (4-1+4i)(3-i)/10

⇛ (3+4i)(3-i)/10

⇛ (9-3i+12i-4i²)/10

⇛ (9+9i-4(-1))/10

Since, i² = -1

⇛(9+9i+4)/10

⇛(13+9i)/10

⇛ (13/10)+ i (9/10)

We know that

The conjugate of a+ib is a-ib

So,

The conjugate of (13/10)+ i (9/10) is

(13/10)-i(9/10) ⇛ (13/10)+i (-9/10)

Answer:-The conjugate of (13/10)+ i (9/10) is (13/10)+i (-9/10)

Additional comment:

The conjugate of a+ib is a-ib and
i = -1
(a+b)² = a²+2ab+b² • (a+b)(a-b)=a²-b² •(a-b)²=a²-2ab+b².

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2 years ago

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Sergio039 [100]

It’s 39. You got it right

6 0

3 years ago

Read 2 more answers