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3 years ago

Brianne evaluated the expression 42+4(6-2)

Mathematics

1 answer:

Levart [38]3 years ago

6 0

Answer:

Follow the rule of BODMAS (brackets, of, division, multiplication, addition, subtraction)

Ans: 58

Step-by-step explanation:

42 + 4(6 - 2) Process --> 6 - 2 = 4

= 42 + 4 * 4 Process --> 4 * 4 = 16

= 42 + 16 Process --> 42 + 16 = 58

= 58

Hope this helps :)

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Two students, Tony and Mike, factored the trinomial 8x2 − 12x − 8. Tony factored it as 4(x − 2)(2x + 1) and Mike factored it as

vlada-n [284]

Tony and Mike, factored the trinomial $8x^2 - 12x - 8$

Tony factored it as 4(x - 2)(2x + 1) and

Mike factored it as (x - 2)(8x + 4)

$8x^2 - 12x - 8$

GCF is 4. We factor out 4

$4(2x^2 - 3x - 2)$

2*-2=-4. We find out two factors whose product is -4 and sum is -3

two factors are -4 and 1. Split middle term -3x using two factors

$4(2x^2 - 4x + 1x - 2)$

Group first two terms and last two terms

$4[(2x^2 - 4x) + (1x - 2)]$

Factor out GCF from each group

$4[2x(x - 2) + 1(x - 2)$

4(2x+1)(x-2)

Tony factored it correctly

Mike factored it as (x − 2)(8x + 4)

Mike factor 8x+4 further. GCF of 8 and 4 is 4

So it becomes 4(2x+1)

Mike not factored it completely

8 0

3 years ago

What is the coefficient of the fifth term in (a + b)^9 ?

Margaret [11]

remember a coefficient is the number in front of the variable

the coefficient in the fifth term is 9 since 9 is a number.

8 0

3 years ago

Read 2 more answers

bethany's monthly gross income is $3840. she pays 24% of her monthly gross earnings in federal and state taxes, and 15% for her

Likurg_2 [28]

Answer:

She cannot rent the apartment. She is $33.60 short. She will pay $2073.60 in taxes, loans, and credit cards. Hope this helps!

Step-by-step explanation:

3840*.24=921.60

3840*.15=576

921.60+576+576=2073.60

3840-2073.60=1766.4.

5 0

3 years ago

After the new admission to the school, there is an increase of 30 percent of students. If the total number of students is now 12

Salsk061 [2.6K]

Step-by-step explanation:

1200 students=130%(100% +30%)

100%=?

100% ×1200/130%

800students

7 0

3 years ago

MEC makes a big family tent in the shape of a symmetrical triangular prism. The floor of the tent is 5 m long and 2.5 m wide. Th

SVEN [57.7K]

Answer:

15,236 sq in

Step-by-step explanation:

First, you have to split the net into three rectangles and two triangles

step 1

triangular base area

1/2 bh = 1/2 (44 in)(64 in)

= 1/2 (2,816 sq in)

= 1,408 sq in.

2 x 1,408 sq in = 2,816 sq in.

step 2

end rectangle area

lw = (68 in)(69 in)

= 4,692 sq in

2 x 4,692 sq in = 9,384 sq in

Now find the area of the middle rectangle

lw - (69 in) (44 in) = 3,039 sq in.

then add all the areas together

2,816 + 9,384 + 3,036 = 15,236 sq in

Hope this helps :)

3 0

3 years ago