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weqwewe [10]
2 years ago
12

Here are some of the numbers that were picked out of the bag at bingo evening:

Mathematics
1 answer:
musickatia [10]2 years ago
8 0
16 is a square number. 4x4=16.
31 and 17 are prime numbers because only 1 and that number can be multiplied to create that number.
You might be interested in
In the right ΔABC, AN is the altitude to the hypotenuse. Find BN, AN, and AC, if AB=2√5 in and NC= 1 in.
kipiarov [429]

Answer:

BN=4\ \text{in}

AN=2\ \text{in}

AC=\sqrt{5}\ \text{in}

Step-by-step explanation:

Let BN=x

BC=c

NC=y=1\ \text{in}

AB=a=2\sqrt{5}\ \text{in}

AC=b

We have the relation

\dfrac{BC}{AB}=\dfrac{AB}{BN}\\\Rightarrow \dfrac{c}{a}=\dfrac{a}{x}\\\Rightarrow c=\dfrac{a^2}{x}\\\Rightarrow x+1=\dfrac{a^2}{x}\\\Rightarrow x^2+x=20\\\Rightarrow x^2+x-20=0\\\Rightarrow x=\frac{-1\pm \sqrt{1^2-4\times 1\times \left(-20\right)}}{2\times 1}\\\Rightarrow x=4,-5

\boldsymbol{BN=4\ \text{in}}

h=\sqrt{a^2-x^2}\\\Rightarrow h=\sqrt{(2\sqrt{5})^2-4^2}\\\Rightarrow h=2\ \text{in}

\boldsymbol{AN=2\ \text{in}}

b=\sqrt{h^2+y^2}\\\Rightarrow b=\sqrt{2^2+1^2}\\\Rightarrow b=\sqrt{5}\ \text{in}

\boldsymbol{AC=\sqrt{5}\ \text{in}}

8 0
2 years ago
What is $15.25,7% i really need help on this question
irina1246 [14]

Answer:

.07 * 15.25 = 1.0675

Step-by-step explanation:

4 0
3 years ago
Martin Luther King, Jr. Middle School has a bake sale, selling only cookies and cupcakes. For every 15 cookies sold, there are 7
goldfiish [28.3K]
Do u have notes cause if you do that will help.
8 0
3 years ago
Read 2 more answers
Just a tad bit more points :)
swat32

Answer:

Thx have a great day :)

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Whats 1/5 - 1/7 please can you tell me how to work it out<br> thanks
Andrej [43]
Convert the fractions so they both have the same denominator (bottom part of the fraction)

1/5 = 7/35

This is because 5*7=35, so 1*7=7

1/7 = 5/35

This is because 7*5=35, so 1*5 =5

Then subtract the top numbers to get the answer:

\frac{7}{35}-\frac{5}{35} = \frac{2}{35}
3 0
3 years ago
Read 2 more answers
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