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faltersainse [42]
3 years ago
6

this year cornell's class took one more than three times as many field trips as last year's class. this year, cornell's class to

ok a total of 7 trips. How many fields trips did bis class take last tera
Mathematics
1 answer:
Cloud [144]3 years ago
3 0
If he took x trips last year
3x+1=7
3x=6
x=2
he took 2 trips last year
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Solve each radical equation. Be sure to check your solutionsa)√(2x-3)=11b)∛(6-x)=-3
leva [86]

Answer:

a) x = 62

b) x = 33

Step-by-step explanation:

Hi there!

a) Let´s write the equation:

√(2x-3) = 11

Square both sides

2x - 3 = 121

add 3 to both sides of the equation

2x = 124

divide by 2 both sides

x = 62

Let´s check:

√(2x-3) = 11

x = 62

√(2(62)-3) = 11

√(124-3) = 11

√121 = 11

11 = 11

x = 62 satisfies the equation

b) Let´s write the equation:

∛(6 - x) = -3

Cube both sides

6 - x = -27

subtract 6 to both sides

-x = -27 - 6

-x = -33

divide by -1 both sides

x = 33

Now, let´s check the result:

∛(6 - x) = -3

x = 33

∛(6 - 33) = -3

∛(-27) = -3

-3 = -3

x = 33 satisfies the equation

8 0
3 years ago
What is the volume of a rectangular Prism if it is scaled down by a factor of 1/10? Original volume is 135.
Snezhnost [94]

Answer:

V=0.135\ units^3

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to teh scale factor elevated o the cube

Let

z ----> the scale factor

x ----> the volume of the dilated prism

y ----> the volume of the original prism

z^3=\frac{x}{y}

we have

z=\frac{1}{10}

y=135\ units^3

substitute

(\frac{1}{10})^3=\frac{x}{135}

solve for x

(\frac{1}{1,000})=\frac{x}{135}

x=135/1,000=0.135\ units^3

6 0
3 years ago
There are 50 animals in a shelter. Sixty percent of the animals are dogs. Which equation can be used to find the number of dogs
prisoha [69]

Answer:

sixty percent of 50 is 30. So i would say the first one. 30 dogs out of 50 animals.

Step-by-step explanation:

6 0
3 years ago
See attached 50 POINTS!
Nina [5.8K]

Hello,

Question-

Answer- The correct answer is A

Work- 2 times 9 plus 3 is 21

4 times 9 is 36

5 times 9 - 8 is 37

When you add those up you get 94

And 94 is A


Important- If my answer did help please mark me as brainliest thank you and have the best day ever!

6 0
3 years ago
Read 2 more answers
What is the sum (2/5 x +5/8)+(1/5 x - 1/4)?
Artyom0805 [142]

\left(\dfrac{2}{5}x+\dfrac{5}{8}\right)+\left(\dfrac{1}{5}x-\dfrac{1}{4}\right)=\left(\dfrac{2}{5}x+\dfrac{1}{5}x\right)+\left(\dfrac{5}{8}-\dfrac{1}{4}\right)\\\\=\dfrac{2+1}{5}x+\left(\dfrac{5}{8}-\dfrac{1\cdot2}{4\cdot2}\right)=\dfrac{3}{5}x+\left(\dfrac{5}{8}-\dfrac{2}{8}\right)\\\\=\dfrac{3}{5}x+\dfrac{5-2}{8}=\boxed{\dfrac{3}{5}x+\dfrac{3}{8}}

3 0
3 years ago
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