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Norma-Jean [14]

2 years ago

5

A liquid is found to have a volume of 50 mL (in a graduated cylinder). When placed on a balance, the liquid and graduated cylind

er has a mass of 125 g. The empty graduated cylinder has a mass of 75 g. What is the density of the liquid? g

1 answer:

Lena [83]2 years ago

8 0

1g/ml

Mark brainliest please

Hope this helps you

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HELP ME PLEASE!! A total of 30 shirts were sold at Friday night's football game. Each adult shirt cost $10.50 and each youth shi

zubka84 [21]

Answer:

hey

Step-by-step explanation:

r u in red oak too?

3 0

3 years ago

A rectangular swimming pool has an area of (70x + 10) square feet. Find possible dimensions of the pool.

Ann [662]

Answer:

and means + or addition

so 10x+7+x

11x+7

6 0

4 years ago

Please! Need help! Please answer 6 through 10! Brainliest! As a reward!

True [87]

Answer:

6=72 cm; 7=15 cm; 8=30 in; 9)56.5 degrees; 10)40 in

Step-by-step explanation:

6) The height of the triangle is 12 cm. The base is around 10 cm. Triangles are 1/2(b)h, so:

1/2(10)=5

5*12=60 cm

72 is closest to this.

7) Volume is l*w*h, so:

2.5*1.5=3.75

3.75*4=15 cm

8) Again, the height is 5 and the base is 12. 1/2(b)h means:

1/2(12)=6

6*5=30 in

9) All triangles have 180 degrees. So first, add the degrees you know:

33.5+90=123.5

Now, subtract that from 180:

180-123.5=56.5

10) Trapezoids can be found by multiplying the height by the smaller base, so:

6*8=40 in

Hope this helped!

4 0

2 years ago

Genrish500 [490]

Given

$a\sqrt{x+b}+c=d$

we have

$\sqrt{x+b}=\dfrac{d-c}{a}$

Squaring both sides, we have

$x+b=\dfrac{(d-c)^2}{a^2}$

And finally

$x=\dfrac{(d-c)^2}{a^2}-b$

Note that, when we square both sides, we have to assume that

$\dfrac{d-c}{a}>0$

because we're assuming that this fraction equals a square root, which is positive.

So, if that fraction is positive you'll actually have roots: choose

$a=1,\ b=0,\ c=2,\ d=6$

and you'll have

$\sqrt{x}+2=6 \iff \sqrt{x}=4 \iff x=16$

Which is a valid solution. If, instead, the fraction is negative, you'll have extraneous roots: choose

$a=1,\ b=0,\ c=10,\ d=4$

and you'll have

$\sqrt{x}+10=4 \iff \sqrt{x}=-6$

Squaring both sides (and here's the mistake!!) you'd have

$x=36$

which is not a solution for the equation, if we plug it in we have

$\sqrt{x}+10=4 \implies \sqrt{36}+10=4 \implies 6+10=4$

Which is clearly false

7 0

3 years ago

PLZ HURRY !!!!! Different shapes are drawn on cards and then the cards are placed in a bag. The number of cards for each shape i

bazaltina [42]

70%
12+27+91 = 130
91/130 = .7
.7x100 = 70%
___
.700
7.00
70.0

Answer is 70%

5 0

3 years ago

Read 2 more answers