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3 years ago

Help me Solve ⎪c – 5⎥ = 7

Mathematics

1 answer:

jarptica [38.1K]3 years ago

3 0

Answer:

Hey! No need to fret ok so lc-5l =7 so we know the opposite of subtraction is addition so we add 5+7+ 13 so that mean 13-5=7

Step-by-step explanation:

Hope I helped have a good day please put me for brainliest Thank You!

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una ventana rectangular tiene l metros de ancho y h metros de altura, con un perímetro de 6 metros y un área de 2m² ¿cuál es la

seropon [69]

Answer:

The formula for calculating the width of the window is

$w=\frac{-(-3)(+/-)\sqrt{-3^{2}-4(1)(2)}} {2(1)}$

Step-by-step explanation:

The question in English is

A rectangular window is l meters wide and h meters high, with a perimeter of 6 meters and an area of 2m². What is the formula for calculating the width of the window?

we know that

The perimeter of the window is equal to

$P=2(l+w)$

we have

$P=6\ m$

$6=2(l+w)$

simplify

$3=(l+w)$

isolate the variable l

$l=3-w$ ----> equation A

The area of the window is equal to

$A=lw$

we have

$A=2\ m^2$

$2=lw$ ----> equation B

substitute equation A in equation B

$2=(3-w)w$

solve for w

$2=3w-w^2$

$w^2-3w+2=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$w^2-3w+2=0$

$a=1\\b=-3\\c=2$

substitute in the formula

$w=\frac{-(-3)(+/-)\sqrt{-3^{2}-4(1)(2)}} {2(1)}$ ---> formula for calculating the width of the window

$w=\frac{3(+/-)\sqrt{1}} {2}$

$w=\frac{3(+/-)1} {2}$

$w=\frac{3(+)1} {2}=2\ m$

$w=\frac{3(-)1} {2}=1\ m$

7 0

3 years ago

Find the GCF of the terms of the polynomial. 30x3 + 16x5 a. x3 b. 2x3 c. 2x5 d. 16x

Vladimir79 [104]

You can take out 2x^3 from both terms making it
2x^3 (15+8x^2)
Answer is B

3 0

3 years ago

A.756 b.936 c.1,008 d.1,080 HELLLPPPPP

luda_lava [24]

Answer:

936 is the correct option

6 0

3 years ago

Read 2 more answers

How many tenths would you need to make the number 17

tatyana61 [14]

You would need one because you arent yet to 20 so it takes one tenth for example;

1.7 or 7/10

Thats my guess tho man if it is more complicated than that, SORRRYYYY

6 0

2 years ago

i need help solving my homework it says : A rectangular prism has a length of 4 cm and a width of 5 cm. The volume of the prism

sashaice [31]

The volume is length * width * height. Length * width is 4 * 5 or 20, so we have that 20 * height = 200. Divide by 20 to get height = 10.

4 0

3 years ago