3 years ago

Can you help with these two? Thanks!

Mathematics

1 answer:

Charra [1.4K]3 years ago

4 0

Answer:

1. D.

2.C.

Step-by-step explanation:

If I'm right pls mark brainleist

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xenn [34]

Answer:

15.23 cm²

Step-by-step explanation:

area = 37.8 cm²

145°/360° = 0.4028 portion of entire area

0.4028 x 37.8 cm² = 15.23 cm²

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3 years ago

A 1000 gallon tank, initially full of water, develops a leak at the bottom. Given that 300 gallons of water leak out in the firs

Over [174]

Answer:

option F

Step-by-step explanation:

given,

capacity of tank = 1000 gallon

volume of water leak = 300 gallon

time = 30 min

water is leaking at the rate

formula used

$A = B e^{-kt}$

At t = 0 A = 1000 gallons

$1000= B e^{-k\times 0}$

B = 1000

$A = 1000 e^{-kt}$

at t = 30 A = 700

$700= 1000 e^{-k\times 30}$

$e^{-k\times 30}=0.7$

taking ln both side

$-k\times 30=ln(0.7)$

$k=-\dfrac{ln(0.7)}{30}$

now,

$A = 1000 e^{\dfrac{ln(0.7)}{30}t}$

$A = 1000\times 0.7 e^{\dfrac{t}{30}}$

$A = 700 e^{\dfrac{t}{30}}$

hence, the correct answer is option F

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4 years ago

On the coordinate grid, the graph of y = RootIndex 3 StartRoot negative x minus 1 EndRoot is shown. It is a reflection and trans

Thepotemich [5.8K]

Answer:

{y | y is a real number}

Step-by-step explanation:

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4 years ago

Brainliest

vovikov84 [41]

Answer:

hey i know this might not help the way you want it to but try using khan Academy these videos might be helpful

Step-by-step explanation:

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3 years ago

Read 2 more answers

Need Answers ASAP

Solnce55 [7]

The opooste angles are equal

so
4y-8=79+y
minus y both sides
3y-8=79
add 8 both sides
3y=87
diide both sides by 3
y=29

6 0

3 years ago