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mixer [17]
3 years ago
5

Xavier missed 70 questions on his multiple choice history final and earned a grade of 65%. How many total questions were on the

final exam?
Mathematics
1 answer:
DochEvi [55]3 years ago
7 0

Answer:

Step-by-step explanation:

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Abc is an isosceles and right triangle whose hypotenuse measures 8 inches. use the pythagorean theorem to determine the length o
geniusboy [140]
Because the triangle ABC is isosceles, the leg of the triangle has the same length. For example, the length of one leg is a, then the other leg is a too.

Input the numbers to pythagorean formula
a² + b² = c²
a² + a² = 8²
2a² = 64
a² = 64/2
a² = 32
a = √32
a = √16 × √2
a = 4√2

The length of each leg is 4√2 inches
6 0
3 years ago
Write an algebraic expression for the phrase the product of g and 4
Fudgin [204]

Product is the answer to a multiplication problem so we multiply g and 4.

4xg or 4(g). Or even simpler, you could do 4g.

hope it helps!

5 0
3 years ago
Expand (2 + a)9 using Pascal’s triangle.
Natalija [7]

Answer:

Step-by-step explanation:

The Pascal triangle is used to determine the coefficients of the terms when we expand the expression.

                                             1                                (A + B) ^ 0 = 1

                                         1       1                            (A +B ) ^ 1 = 1A + 1B

                                   1          2        1          (A+ B) ^ 2 = 1A^2 + 2 AB + 1B^2

By extending the triangle, you will get the 9th row, which is your expression, of the coefficients. that is

1          9       36    84    126    126    84    36    9    1

Now, fill in AB in the gaps.

1AB + 9 AB + 36AB + 84AB + 126AB + 126AB +84AB + 36AB + 9AB + 1AB

Next, you need to go from the left to fill out the exponent of A and it will go down from 9 (the exponent of the whole thing) . That is

1A^9B+9A^8B+36A^7B+84A^6B+126A^5B+126A^4B+84A^3B+36A^2B+9A^1B+1A^0B

Next will be the exponent of B. this time, you go from the right and do the same with A. You can go from the left also, but go up from 0 to 9 for the exponent of B

1A^9B^0+9A^8B^1+36A^7B^2+84A^6B^3+126A^5B^4+126A^4B^5+84A^3B^6+36A^2B^7+9A^1B^8+1A^0B^9

The last step is just to simplify the A^0=1 and B^0 =1 at the first and the last terms.

A^9+9A^8B^1+36A^7B^2+84A^6B^3+126A^5B^4+126A^4B^5+84A^3B^6+36A^2B^7+9A^1B^8+B^9

Hope you can learn the method

5 0
3 years ago
it will cost $285 to charter a bus for a class trip. the class treasurer says that there is $60 in the class treasury. the 20 st
dalvyx [7]
(285-60)/20
Which is $11.25 per child
4 0
3 years ago
Read 2 more answers
40 is what percent of 160?
mash [69]

Answer:

25

Step-by-step explanation:

percentage calculator 40 is what percent of 160=25;)

4 0
3 years ago
Read 2 more answers
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