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kogti [31]
2 years ago
5

PLS HELP ITS A SIMPLE EQUATION I GIVE 30 PTS AND BRANLIEST

Mathematics
2 answers:
KengaRu [80]2 years ago
8 0

Answer:

- 59/40

Step-by-step explanation:

Andrews [41]2 years ago
4 0

Answer:

-1 39/40

Step-by-step explanation:

1.Calculate the value  

9/10 - 2 3/8 = −1.975

convert to a fraction

-1.975 = -1 39/40

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How do you do this please help
Nataly_w [17]
You have to multiple and divide
3 0
3 years ago
Factor 4x^4+7x^2-2=0
natulia [17]

Answer:

(2x-1)(2x+1)(x^2+2) = 0

Step-by-step explanation:

Here's a trick:  Use a temporary substitution for x^2.  Let p = x^2.  Then 4x^4+7x^2-2=0 becomes 4p^2 + 7p - 2 = 0.  

Find p using the quadratic formula:  a = 4, b = 7 and c = -2.  Then the discriminant is b^2-4ac, or (7)^2-4(4)(-2), or 49+32, or 81.  

Then the roots are:

       -7 plus or minus √81

p=   --------------------------------

                        8

p = 2/8 = 1/4 and p = -16/8 = -2.

Recalling that p = x^2, we let p = x^2 = 1/4, finding that x = plus or minus 1/2.  We cannot do quite the same thing with the factor p= -2 because the roots would be complex.

If x = 1/2 is a root, then 2x - 1 is a factor.  If x = -1/2 is a root, then 2x+1 is a factor.  

Let's multiply these two factors, (2x-1) and (2x+1), together, obtaining 4x^2 - 1.  Let's divide this 4x^2 - 1 into 4x^4+7x^2-2=0.  We get x^2+2 as quotient.

Then, 4x^4+7x^2-2=0 in factored form, is (2x-1)(2x+1)(x^2+2) = 0.

6 0
3 years ago
What is the constant in the algebraic expression to represent the patter below??
Hitman42 [59]

Answer:

The constant in the algebraic expression to represent the pattern below is 4.

Step-by-step explanation:

Imortant Tip:

  • An Arithmetic sequence has a constant difference 'd' which can be determined by computing the differences of all the adjacent terms

Given the pattern

15,11,7,3,-1,...

computing the differences of all the adjacent terms

11-15=-4,\:\quad \:7-11=-4,\:\quad \:3-7=-4,\:\quad \:-1-3=-4

The difference between all the adjacent terms of the pattern is the same which is

d=-4

Hence, the given pattern represents the Arithmetic sequence.

Therefore, the constant in the algebraic expression to represent the pattern below is 4.

8 0
3 years ago
Find the difference.<br> -7-(-5)
Dvinal [7]

Answer:

Remember: minus a minus is a plus:

=11

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Which statements are true about the area of a circle? Check all that apply.
maria [59]

Answer:

B) Area = \pi r^{2}

C) The area of a circle can be found by breaking apart the circle and forming a parallelogram.

E) The area of a circle is in square units.

Step-by-step explanation:

These are all true.

Hope it helps and is correct!

4 0
3 years ago
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