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nordsb [41]
2 years ago
7

PLEASE HELP LOOK AT IMAGE FOR ANSWER I WILL MAKE YOU BRAINLISET PLEASE HELP

Mathematics
2 answers:
777dan777 [17]2 years ago
5 0
The correct answer is C
xxMikexx [17]2 years ago
3 0

Answer:

c

Step-by-step explanation:

You might be interested in
An investor invested a total of $2500 in two mutual funds. One fund earned a 5% profit while the other earned a 3% profit. If th
7nadin3 [17]

Answer:

$500 and $2000

Step-by-step explanation:

Let x represent the total investment = $2500

also, this total is split into two different funds

Lets represent these funds as a and b, such that fund a yields a profit of 3% and fund b yield a profit of 5%

So,

a + b = x

a + b =  2500   ......eq 1

Profit from each fund gives;

0.03 a + 0.05b = 115     ....eq 2

Solve simultaneously using substitution method

From eq 1;

b = 2500 - a

Slot in this value in eq 2

0.03a + 0.05 (2500 - a) = 115

expand

0.03a + 125 - 0.05a = 115

collect like terms

0.03a - 0.05a = 115 - 125

-0.02a = -10

Divide both sides by -0.02

a =  $500

Put this value of a in eq 1

500 + b =  2500

Subtract 500 from both sides

b = 2500 - 500

b = $2000

3 0
3 years ago
HELP PLZ ASPA 100 POINTS WILL GIVE BRAINLIEST!!!
Varvara68 [4.7K]

Step-by-step explanation:

(x10,y-2), reflection over y=1

6 0
3 years ago
Read 2 more answers
Amber, Bernie, and Carlos are working on a problem together. Their goal is to correctly apply the difference of cubes formula to
NeX [460]

Answer: Carlos is correct

Step-by-step explanation:

2x^5-250x^2

The first step is to factorize out 2x^2

2x^2(x^3-125)

This can be rewritten as

2x^2(x^3-5^3),

Recall, difference if cube (a^3-b^3)

= (a-b)(a^2 +ab + b^2)

from our equation,

a= x

b = 5.

So the difference of cubes will be

2x^2[(x-5) (x^2 + 5x + 5^2)]

=2x^2[(x-5) (x^2 + 5x + 25)]

Carlos followed these steps. So he is correct. Carlos is correct because he correctly factored the GCF, identified a and b, and applied the difference of cubes method.

Amber is incorrect because 125 is equal to b3, not b.

Bernie is incorrect because x2 is not the GCF of the polynomial. The GCF is 2x^2.

6 0
3 years ago
CAN SOMEONE ANSWER THIS PLEASE! WILL THANK AND GIVE EXTRA POINTS
Pavlova-9 [17]
Choice 3 c=400t

= 33333
3 0
3 years ago
A confidence interval for the population mean μ tells us which values of μ are plausible (those inside the interval) and which v
solmaris [256]

Answer:

90% confidence interval for the mean blood pressure of all executives is 123.12 to 129.02.

The closest option is A

Step-by-step explanation:

Confidence Interval = mean + or - Error margin (E)

mean = 126.07

sd = 15

n = 72

degree of freedom = n - 1 = 72 - 1 = 71

Confidence level (C) = 90% = 0.9

Significance level = 1 - C = 1 - 0.9 = 0.1 = 10%

t-value corresponding to 71 degrees of freedom and 10% significance level is 1.6667

E = t×sd/√n = 1.6667×15/√72 = 2.95

Lower limit = mean - E = 126.07 - 2.95 = 123.12

Upper limit = mean + E = 126.07 + 2.95 = 129.02

90% confidence interval for the mean blood pressure of all executives is between a lower limit of 123.12 and an upper limit of 129.02.

4 0
3 years ago
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