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saw5 [17]
3 years ago
11

Anna bought 8 tetras and 2 rainbow fish for her aquarium. The rainbow fish cost​ $6 more than the tetras. She paid a total of​ $

37.
Which of the following are​ true? Select all that apply.
A.
An equation to find the cost​ t, in​ dollars, of a tetra is 8 t + 2 t + 6 = 37.
B.
The cost of 4 tetras is the same as the cost of a rainbow fish.
C.
Reducing the number of rainbow fish by 1 would result in a total cost of​ $28.50.
D.
An equation to find the cost​ r, in​ dollars, of a rainbow fish is 8 r + 2 (r + 6) 37.
E.
One rainbow fish plus 5 tetras cost​ $21.
Mathematics
2 answers:
Rudiy273 years ago
8 0

The answer is, C and E

____ [38]3 years ago
5 0

Answer:

C, D, and E

Step-by-step explanation:

When trying to solve for the cost of each item you will find a rainbow fish is $8.50 and a tetra is $2.50. If you use that information to solve the other answer choices C, D, and E would be correct

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The measures of two angles of a triangle are 23 and 67. Is the triangle acute, right, or obtuse. Use geometric terms in explanat
Vlada [557]
The angle measures of any triangle = 180 adding 27 and 63. = 90 leaving 90 degrees for the remaining angle therefore the triangle is a right triangle by definition if a triangle has a 90 degree angle it's a right triangle
3 0
3 years ago
What 2 numbers should be used to find 231 - 198 using the 10 method for subtracting quickly in your head?
Airida [17]

Answer: "Count 2 and then count 31 more."

Step-by-step explanation:

We have the equation:

231 - 198

Now, the negative number is kinda ugly, so i will write it as:

200 - 2 = 198

Is a lot easier work with 200 and 2, than with 198.

Then the equation is now:

231 - (200 - 2)

And the left number we also have a "200", so it can be written as:

200 + 31 = 231

As this is a sum, we can ignore the parentheses.

200 + 31 - 200 + 2

31 + 2

Then the correct option is:

"Count 2 and then count 31 more."

4 0
3 years ago
Help on questions 11 and 15 Add and simplify if possible
Svetllana [295]
\frac{16+x}{x^3}+\frac{7-4x}{x^3}=\frac{16+x+7-4x}{x^3}=\frac{23-3x}{x^3}\\\\======================================\\\\\frac{5}{t-1}+\frac{3}{t}=\frac{5t}{t(t-1)}+\frac{3(t-1)}{t(t-1)}=\frac{5t+3t-3}{t^2-t}=\frac{8t-3}{t^2-t}
7 0
2 years ago
Read 2 more answers
A total that is divided into equal groups is called the
brilliants [131]

<em>Greetings!</em>

In division, the number being divided is considered the dividend, and the number dividing is called the<em> divisor</em>. The answer is the <em>quotient</em>.

<em>A total that is divided into equal groups is called the </em><u><em>dividend</em></u><em>.</em>

Hope this helps!

8 0
3 years ago
Gain finds a skirt that she likes at the store for $45.99. If the tax rate is 5.8%, how much will the shirt cost in all
Aleks04 [339]

Answer:

$48.66

Step-by-step explanation:

The price of a good is the base cost plus tax. We are given the cost of the skirt, so all we need is the amount of tax. To find it, we multiple the cost of the  skirt by the tax rate:

45.99 * 0.058 = 2.67

We now add the tax to the cost of the skirt:

45.99 + 2.67 = 48.66

As you can see, we are adding the price of the skirt to 5.8% of the skirt's price, so we can also solve the problem by simply multiplying the cost by 1.058 as shown below:

45.99 * 1.058 = 48.66

4 0
3 years ago
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