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3 years ago

B) Factorise 4(x + y) + (x + y)? Terms & Conditions

Mathematics

1 answer:

tekilochka [14]3 years ago

3 0

Answer:

5(x+y)

Step-by-step explanation:

4×x+4×y+x+y

4x+4y+x+y

5x+5y

5(x+y)

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Which statements describe the solutions to the inequality x less-than negative 20? Check all that apply. There are infinite solu

aleksandr82 [10.1K]

Answer:

The first two options (There are infinite solutions, each solution is negative)

Step-by-step explanation:

They can't be positive and no range is specified

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3 years ago

Emaan charges a fixed amount for a bracelet, with an additional charge for each charm a customer adds to the bracelet. Write a l

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Answer:

f(x) = y + (x*p)

Step-by-step explanation:

Since we are not given actual values we will need to make the function with only variables. Each variable will represent the following...

Fixed Cost: y

Cost per charm: p

Number of charms: x

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3 years ago

PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!1

posledela

<u>Assuming that k is variable:</u>

6k - 6²

<u>Assuming that 3k represents 3000:</u>

426×7

7 0

3 years ago

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Calculate an estimate of a square root of 119 + 120i

uysha [10]

Answer:

Step-by-step explanation:

Given

z=119+120 i

Let $\sqrt{119+120 i}=p+iq$

Squaring both sides

$119+120 i=p^2-q^2+2ipq$

Comparing real and imaginary part

Re(LHS)=Re(RHS)

$119=p^2-q^2$ -----------1

comparing Im(LHS)=Im(RHS)

120=2pq

$q=\frac{60}{p}$

Substitute q in 1

$119=p^2-(\frac{60}{p})^2$

$p^4-119p^2-(68)^2=0$

Let $x=p^2$

$x^2-119x-4624=0$

$x=frac{119\pm \sqrt{119^2+4\times 4624}}{2}$

$x=\frac{119\pm 180.71}{2}$

we take only Positive value because $p^2=x$

x=149.85

$p^2=149.85$

thus $p=\pm 12.24$

$q=\mp 4.90$

thus $\sqrt{119+120 i}=\pm (12.24+i 4.90)$

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4 years ago

Can someone help me with this question? (no links!)

tatyana61 [14]

Answer:

Angle 1 is 105 degrees

Step-by-step explanation:

180 - 75 = 105

Angle 1 is 105 degrees

Hope this helped! Have a nice day, and feel free to follow me on i/n/s/t/a (leo_g_rios)

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3 years ago

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