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3 years ago

Write each missing number. 30+40=40+ _?

Mathematics

2 answers:

FrozenT [24]3 years ago

4 0

Answer:

Step-by-step explanation:

kap26 [50]3 years ago

3 0

Answer:

Step-by-step explanation:

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What is negative 6x squared take away 586 =84x take away 4

olchik [2.2K]

Answer:

This equation has no real roots

Step-by-step explanation:

We want to solve

$- 6 {x}^{2} - 586 = 84x - 4$

We group all terms on the left:

$- 6 {x}^{2} - 84x - 586 + 4 = 0$

$- 6 {x}^{2} - 84x - 582= 0$

Divide through by -6

${x}^{2} + 14x + 97 = 0$

The discriminant is

${14}^{2} - 4 \times 1 \times 97 = - 192$

This means the given equation has no real solution, since the discriminant is less than 0

6 0

3 years ago

Find all zeros of function and write the polynomial as a product of linear factorsX^3-x^2+9x-9

mart [117]

Answer:

$\large\boxed{x=1\ \vee\ x=-3i\ \vee\ x=3i}$

Step-by-step explanation:

$\text{The zeros:}\\\\x^3-x^2+9x-9=0\\\\x^2(x-1)+9(x-1)=0\\\\(x-1)(x^2+9)=0\iff x-1=0\ \vee\ x^2+9=0\\\\x-1=0\qquad\text{add 1 to both sides}\\x-1+1=0+1\\\boxed{x=1}\\\\x^2+9=0\qquad\text{subtract 9 from both sides}\\x^2=-9$

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4 years ago

Fishermen fishing for spiny lobster are allowed to keep only lobsters with a carapace length of 3.25 inches or longer. (Than car

ser-zykov [4K]

Answer:

16%

Step-by-step explanation:

First we start by solving for the z score

We have the following information

x = 3.25

Standard deviation = sd = 2.25

Mean = 5.50

Z = (x - mean)/sd

z = 3.25 - 5.50/2 25

z = -1.00

If we look this up in the standard normal distribution table,

P(z<-1.00) = 0.1587

Which when approximated gives us

16%

Therefore approximately 16% of lobsters will have to be returned back to the sea.

4 0

3 years ago

Chris is packing toy boxes that are cubes with 4 inch-sides into a crate. The crate is 3 feet wide by 3 feet long by 2 feet tall

OleMash [197]

A lot of toy boxes my dude

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3 years ago

Which of these equations has no solution?

Free_Kalibri [48]

I'm pretty sure your answer would be A

4 0

4 years ago

Read 2 more answers

Write each missing number. 30+40=40+ _?​

Write each missing number. 30+40=40+ _?