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3 years ago

Mathematical

Mathematics

2 answers:

Ivenika [448]3 years ago

4 0

Answer:

Step-by-step explanation:

32 - 2 = 30

30 - 2 = 28

From those 28 left that Sarah has left, divide by 4 to get 7 in each group remaining.

VARVARA [1.3K]3 years ago

4 0

Answer:

I think 7 in each

Step-by-step explanation:

add 2 +2 Subtract 32 and 4 then divided by 4

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Write an addition equation that can help you find 9-3

Alborosie

X+3=9
-3 -3
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7 0

3 years ago

Read 2 more answers

REALLY APPRECIATE YOUR HELP<br><br>Given log x = 3 and log y = 2, prove that x^2 -7xy =3000y

anyanavicka [17]

Answer:

$if \: log(x ) = 3 \\ log_{10}(x) = 3 \\ {10}^{3} = x \\ therfore \to \: \boxed{x = {10}^{3} } \\ \\ if \: log(y ) = 2 \\ log_{10}(y) = 2 \\ {10}^{2} = y \\ therfore \to \: \boxed{y= {10}^{2} }$

Step-by-step explanation:

$x^2 -7xy =3000y \: then \to \\ x^2 =3000y + 7xy \\ {(10 ^{3} )}^{2} = 3000(10)^{2} + 7( {10}^{3} \times {10}^{2}) \\ {10}^{6} = 3000(10)^{2} + 7( {10}^{3} \times {10}^{2}) \\ {10}^{6} = 3000(10)^{2} + 7( {10}^{5} ) \\ {10}^{6} = 300000 + 700000 \\ \boxed{{10}^{6} = 1000000} \\ hence \: the \: equation \to \: x^2 -7xy =3000y \\ \boxed{ is \: corret}$

♨Rage♨

3 0

3 years ago

5. Audrey Lorenz assembles gift baskets for a florist. The owner pays her $0.55 per small basket and

PilotLPTM [1.2K]

Answer:

219.6

Step-by-step explanation:

small basket:

0.55×288

=158.4

big basket:

0.85x72

=61.2

add up:

219.6

7 0

3 years ago

An object is thrown upward from the top of an 80ft tower.

sweet [91]

C because if you solve for the solutions for the quadratic, then you get 5 and -1 but you cant have negative seconds so 5 is the right answer!

5 0

3 years ago

Elizabeth drove the first half of the trip at 36 mi/h. At what speed should she cover the remaining half of the trip in order to

Trava [24]

Let the total distance of the trip be d. And let x be the required speed on the second half of the trip.
Time for first half of trip = d/(2 x 36) hours.
Time for second half of trip = d/2x.
The total time for the trip is then:
$\frac{d}{72}+\frac{d}{2x}=\frac{d(x+36)[tex]\frac{d}{45}=\frac{d(x+36)}{72x}$ }{72x}[/tex]
However the total time for the trip must also be d/45.
Therefore we can write and solve the following equation:
$\frac{d}{45}=\frac{d(x+36)}{72x}$
Dividing both sides by d, and then cross-multiplying gives:
$72x=45x+(36\times45)$
27x = 1620
x = 60
The answer is 60 mi/h.

3 0

4 years ago