All categories

3 years ago

Could yall answer these in need to finish it in 7mins

Mathematics

2 answers:

san4es73 [151]3 years ago

5 0

Answer:

$- 6 \\ - 9 \\ 6 \\ 42 \\ - 30 \\ 4 \\ - 6 \\ - 14$

Murljashka [212]3 years ago

5 0

Answer:

look below

Step-by-step explanation:

- have you already answered this

You might be interested in

The width of a rectangle is 61 centimeters more than the length. The perimeter is 406 centimeters. Find the length and the width

valentinak56 [21]

$Step \; 1: \; Assign \; Variables \; for \; the \; unknown \; that \; we \; need \; to \; find$

$Let \; x \; be \; length \; of \; the \; rectangle$

$Step \; 2: \; Set \; up \; equation \; based \; on \; information \;\\ given \; about \; the \; rectangle$

$Statement \; 1: Width \; of \; a \; rectangle \; \\is \; 61cm \; more \; than \; the \; length\\\\Width \; = \; 61+x\\\\Statement \; 2: \; The \; perimeter \; is \; 406cm\\\\Perimeter=2(Length+Width)\\Perimeter =2(x+61+x)\\\\So \; the \; mathematical \; equation \; would \; be \\ 2(x+61+x)=406$

$Step \; 3: \; Solve \; the \; equation \; by \\ undoing \; whatever \; is \; done \; x.\\\\2(x+61+x)=406\\Group \; and \; Combine \; like \; terms \; inside \; the \; parenthesis\\\\2(2x+61)=406\\Distribute \; 2 \; in \; the \; left \; side \; of \; the \; equation\\\\4x+122=406\\Subtract \; 122 \; on \; both \; sides\\\\4x+122-122=406-122\\Simplify \; on \; both \; sides\\\\4x=284\\Divide \; on \; both \; sides\\\\\frac{4x}{4}=\frac{284}{4}\\Simplify \; fractions \; on \; both \; sides\\\\x=71$

$Conclusion:\\Length=x=71cm\\Substituting \; 71 \; for \; x \; and \; find \; Width \; value.\\Width=61+x=71+61=132cm\\\\Length \; is \; 71 cm \; and \; Width \; is 132cm$

5 0

3 years ago

The surface area of the top surface of the water in a circular swimming pool is about 206 square feet. Estimate the radius of th

Kaylis [27]

The area of a circle = πR², where π=3.1459... & R = Radius

The area of our circle ≈ 206 ft² = πR², Solve for R²:

R² =206/π ==>R² = 206/3.1459==> R² =65.5 ==> R=√65.5 ≈8 ft

4 0

3 years ago

Read 2 more answers

What is 10.507 rounded to the nearest hundredth?

Neko [114]

10.51 is the answer when you round to the nearest hundredth.

4 0

4 years ago

Read 2 more answers

2 At Bea's Pet Shop, the number of dogs, d, is initially five less than twice the number of cats, c. If she decides to add three

KatRina [158]

Let D be dogs and C be cats

dogs, d, is initially five less than twice the number of cats, c

D + 5 = 2C

If she decides to add three more of each, the ratio of cats to dogs will be

D + 8 = 2C + 3

Could Bea's Pet Shop initially have 15 cats and 20 dogs?

Simply plug in the numbers

20 + 5 = 2(15)

This is clearly not true: 25 does not equal 30

6 0

3 years ago

Can someone explain this to me I already know the answer is 50 but how is it 50?

marusya05 [52]

Angle 10 is 140 degrees

Angle 2 = Angle 10 = 140 degrees (Vertically Opposite Angles)

Angle 5 + Angle 4 = Angle 2 (Corresponding Angles)
Angle 5 + Angle 4 = 140
90 + Angle 4 = 140 (Angle 5 is 90 degrees because c is perpendicular to d)
Angle 4 = 50

3 0

3 years ago