2 years ago

Pls pls pls help me

Mathematics

1 answer:

Andreas93 [3]2 years ago

8 0

Answer:

Step-by-step explanation:

AC = 10

DC² = 10² - 6² = 64

DC = 8

$A_{ABCD}$ = 6 × 8 = 48

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Riley is saving up to buy a new television. She needs a total of $1,285.93. Riley has saved $200.04 already and earns $83.53 per

bija089 [108]

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She will need to work 13 weeks at her job in order to pay for her TV

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2 years ago

Caroline resting heart is 52 beats per minute (bpm). When she starts running her heart rate increases 1.25% each second until it

horsena [70]

Answer:74.55 beat per minute

Step-by-step explanation:

Given

Heart beat is 52 beat per minute

i.e. $B=\frac{52}{60}$ beat per sec

If heart rate is increases 1.25 % each sec

suppose B is the heart beat at first second therefore heat beat at 2 nd second

$B_2=B+1.25 \% B$

$B_2=B(1+1.25 \% )$

For 3 rd sec

$B_3=B(1+1.25\%)+1.25\%B(1+1.25\%)$

$B_3=B(1+1.25\%)^2$

similarly for 3 sec

$B_{30}=B(1+1.25\%)^{29}$

$B_{30}=1.433B$

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$B_{30}=74.55\ \text{beat per minute}$

4 0

3 years ago

Please explain the steps

Gnesinka [82]

Answer:

X= -3,-5

Step-by-step explanation:

3 0

3 years ago

Is 3x^2 − y = 5 a function or not a function

kakasveta [241]

hi!

its not a function since it has a =5

this is an equation

8 0

3 years ago

How do you work it out ???

Natalka [10]

Answer = 70 girls

Firstly, turn 56% into a decimal

56 / 100 = 0.56

Afterwards, multiply that by the number of girls

0.56 x 126 = 70.56

It would be 70 girls bc you can’t have 70 and a half girls.

6 0

3 years ago