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Anni [7]
4 years ago
12

HELP ME ASAP!!!

Mathematics
1 answer:
Lelu [443]4 years ago
5 0
1.) C 43                             9.) what is 4c?
2.) B 8 3/4                         10.) C 2 8/15
3.) D 6 rooms                    11.) B 4.2
4.) B 1/3                             12.) D 2 quarts
5.) C 8/9 cups
6.) D 88
7.) B 2 3/4
8.) B 14 2/5



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Could anyone please help me with this question? thanks
Tpy6a [65]
AB = AC, so this is an isosceles triangle, then angle B=angle C =66⁰.
m∠BAD = m∠CAD, so AD is a bisector. 
In an isosceles triangle, bisector is also median and height.
So AD is perpendicular bisector.
So angle x = 90⁰. 

In triangle ABC
m∠A+m∠B+m∠C=180⁰
m∠A+66+66=180
m∠A=180-66-66=48⁰

m∠A=48⁰
AD is a bisector of A, so y=m∠A/2=48⁰/2=24⁰


x=90⁰, y=24⁰
Answer is A
3 0
4 years ago
Draw place value disks on the place value chart 0.7 ÷ 4
Mama L [17]
Change 0.7 to 7/10 and 4 to 1/4,so it'll be 7/10x1/4, then find least common denominator, 40.change fractions to 28/40x10/40=280/40=70
4 0
4 years ago
Help with this question, ASAP PLEASE!! SHOW YOUR WORK!!
r-ruslan [8.4K]

Simplest polynomial function is x^4-x^3-11x^2+9x+18.

Solution:

Given data:

Zeroes are 3i, –1, 2.

3i is a complex root of the function.

If 3i is a zero of the polynomial then –3i is also a zero of the polynomial.

Therefore zeroes are 3i, –3i –1, 2.

By factor theorem,

If a is zero of the function, then (x – a) is a factor of the polynomial.

So, the factors are (x – 3i), (x + 3i), (x + 1), (x –2).

On multiplying the factors, we get the polynomial.

(x - 3i) (x + 3i) (x + 1) (x -2)

            =(x^2+3ix-3ix+(3i)^2)(x^2-2x+x-2)

            =(x^2-9)(x^2-x-2)

Since the value of i^2=-1

            =x^2(x^2-x-2)-9(x^2-x-2)

            =x^4-x^3-2x^2-9x^2+9x+18

            =x^4-x^3-11x^2+9x+18

Simplest polynomial function is x^4-x^3-11x^2+9x+18.

5 0
3 years ago
Solve the following equation for x to find the total number of people who downloaded songs from a music site for a certain month
anastassius [24]

Answer:

960 people.

Step-by-step explanation:

x = 0.6x + 384

x - 0.6x = 384

0.4x = 384

x = 384 / 0.4 = 960.

5 0
3 years ago
If you can help please do :)
astraxan [27]

Step-by-step explanation:

A

180 - 60 - 70 = 50 \\x = 180 - 50 = 130 \\ x = 130

6 0
3 years ago
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