2 years ago

Helppp and explain too

Mathematics

1 answer:

kozerog [31]2 years ago

5 0

Answer:

the first option

Step-by-step explanation:

I have attached the explanation. hope this help

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What is the exact value for the expression the square root of 189. − the square root of 21. + the square root of 84.? Simplify i

klemol [59]

<span>It's 4 the square root of 21</span>

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2 years ago

Given g(x)= -2x+2 and f(x)= 3x^2+4, find (g+f)(-3)

aliina [53]

Answer:

Step-by-step explanation:

g(x)= -2x+2 and f(x)= 3x^2+4

(g+f)(-3)

g(-3) = -2(-3) +2 = 6+2 =8

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(g+f)(-3) = g(-3) + f(-3) = 8+31 = 39

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3 years ago

How many different six-digit decimal numbers can be formed where the first digit is a 1 or the last digit is a 5?

Mariulka [41]

Answer:

10000 different numbers

Step-by-step explanation:

The numbers will have the form 1XXXX5, in this case, the order is important because 123465 is a different number to 123645. To know the total of differents decimal numbers, use the formula of permutation with repetition:

$n^r$

$n$ is the number of options, $n=10$ , and $r$ the number of times you have to place a digit, $r=4$ .

$10^4=10000$

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2 years ago

A $220 suit is marked down by 30%. Find the sale price.

Ira Lisetskai [31]

Just do 220 times 0.30

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3 years ago

In an experiment, Mary will flip a coin 9 times. Will the relative frequency of her coin landing on heads be

vlabodo [156]

Answer:

so you add 9+9+9+9+9+9+9+9+9

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