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2 years ago

Help me PLEASE quick I will give you brainliest

Mathematics

2 answers:

Tema [17]2 years ago

8 0

Answer:

56. Someone correct me if I'm wrong.

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean Theorem, which is a² + b² = c²

a and b are the legs, and c is the hypotenuse. Here, we know the length of one leg and the hypotenuse. So...

a² + 42² = 70²

First, we need to square these numbers. 42² is 1764. 70² is 4900. So...

a² + 1764 = 4900

Now, we can subtract 1764 from both sides.

a² + 1764 - 1764 = 4900 - 1764

That would give us...

a² = 3136

Now, we square root 3136.

So...

$\sqrt{3136}$ = 56

The missing side <em>should be</em> 56.

slamgirl [31]2 years ago

5 0

68 i am pretty sure.

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3 Which ordered pair is the solution of<br> the system graphed below?

gayaneshka [121]

Answer:

C. (5, -3)

Step-by-step explanation:

Ordered pair just means the coordinate or the point at which both of the graphs intersect. On the x-axis, this is at point 5, and on the y-axis, this is at point -3. Since an ordered pair is in the form (x, y), the answer is therefore C.

8 0

2 years ago

A geometry class has a total of 27 students. The number of females is 13 less than the number of males. How many males and how m

Zanzabum

Answer:

20 males, 7 females

Step-by-step explanation:

x=males

x-13=females

x+x-13=27

2x-13=27

2x=40

x=20

20-13=7

6 0

2 years ago

There are 15 pieces of fruit in a bowl and 6 of them are apples. What

jekas [21]

Answer:

40%.

Step-by-step explanation:

There are 6 / 15 apples out of the bowl.

6/15 = 2/5 = 0.4

So, 40% of the fruit in the bowl are apples.

Hope this helps!

3 0

3 years ago

In a certain city, 27% of the families have a MasterCard, 19% have an American Express card, and 22% have a Visa card. Nine perc

Natasha2012 [34]

Answer:

35%

Step-by-step explanation:

Data provided in the question:

P(Master card) = 27% = 0.27

P(American express card) = 19% = 0.19

P( Visa card ) = 22% = 0.22

P( Master and American express card ) = 9% = 0.09

P( Visa and master card ) = 14% = 0.14

P( American express and visa card ) = 6% = 0.06

Now,

The probability of selecting a family that has either a Visa card or an American Express card

= P( Visa card ) + P( American express card ) - P( Visa and American express card )

= 0.22 + 0.19 - 0.06

= 0.35

= 0.35 × 100% = 35%

5 0

3 years ago

Find all the integers,b, that make up the trinomial x2 + bx + 10 factorable.

KonstantinChe [14]

By the fundamental theorem of algebra, we can write

$x^2+bx+10=(x-r_1)(x-r_2)$

Expanding the right hand side, we get

$x^2+bx+10=x^2-(r_1+r_2)x+r_1r_2\implies\begin{cases}r_1+r_2=-b\\r_1r_2=10\end{cases}$

We want $b$ to be an integer, which means $r_1,r_2$ must also be integers. This means $r_1,r_2$ must be factors of 10. There are several possibilities:

$r_1=\pm10,r_2=\pm1\implies b=-(10+1)=-11\text{ or }b=-(-10-1)=11$

$r_1=\pm5,r_2=\pm2\implies b=-(5+2)=-7\text{ or }b=-(-5-2)=7$

So there are 4 possible values for $b$ : -11, -7, 7, and 11.

7 0

3 years ago