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katovenus [111]
2 years ago
12

Andrews math teacher entered the seventh- grade students in a math competition. There was an enrollment fee of $30 and also an $

11 charge each packet of 10 test. The total cost was $151. How many test were purchased?
Mathematics
1 answer:
Anon25 [30]2 years ago
7 0

Answer:

11

Step-by-step explanation:

You would start by subtracting $30 from $151 which is $121.

Then you would divide this by 11 which 121÷11=11

So 11 test were bought.

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If A+B= 45° then prove that: tanA+ tanB+ tanA. tanB​
Iteru [2.4K]

Answer:

See Explanation

Step-by-step explanation:

A+B= 45 \degree \\  \\ assuming  \:  \tan \: on \: both \: sides \\  \\\implies \: \tan( A+B)=  \tan 45 \degree \\  \\  \implies \: \tan( A+B)=  1 \:  \: \\  (  \because \: \tan 45 \degree = 1) \\  \\ \implies \:  \frac{\tan \: A +\tan \: B }{1 - \tan \: A .\tan \: B }  = 1 \\  \\ \implies \: \tan \: A +\tan \: B = 1 - \tan \: A .\tan \: B \\  \\ \purple{ \implies }\:  \orange{ \bold{\tan \: A +\tan \: B  + \tan \: A .\tan \: B= 1 }} \\  \\ thus \: proved

8 0
2 years ago
110$ for 16ft find the unit rate ​
Neporo4naja [7]

Answer:

6.875 dollars per feet

Step-by-step explanation:

110/16

6.875

8 0
3 years ago
Plz answer only if correct :)) <br> (this is trig.ratios) in
slamgirl [31]

Answer:

39

Step-by-step explanation:

Since you want to find the variable x all you have to do is simple subtraction.

The two numbers (61 and 22). Subtract those numbers and you get 39. Now it wants you to round to the jearest hundredth but there is no hundreds place so we can round to the nearest tenth. Which would be 30! Hope it helped... :)!

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8 0
3 years ago
A total of 632 adults and children are at a water park. There are 68 fewer adults than children at the water park. How many chil
Alinara [238K]

Answer:

<h2>350 children</h2>

Step-by-step explanation:

x = Number of adults

x + x + 68 = 632

2x = 632 -  68

2x = 564

x = 282

282 + 68 = 350

350 children.

We can always check.

282 + 350 =

It equals 632, so we know our answer is correct.

6 0
2 years ago
Read 2 more answers
A statue is 70 cm tall. when its shadow is 61 cm? long, the shadow of a certain tree is 22 m long. how tall is the? tree
Ann [662]
Ratio and Proportions
61:70=ratio of statue

?:22=61:70
?/22=61/70
Move 22 over the equal sign
?=61*22/70
?=1342/70
?=19.1714286 

The tree is 19.1714286m tall

Hope this helps!

8 0
3 years ago
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