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3 years ago

Can someone help me!!

Mathematics

1 answer:

yKpoI14uk [10]3 years ago

6 0

Answer:

It's 1

Step-by-step explanation:

Simplify 16 – 3(8 – 3)2 ÷ 5 .

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1. What is the solution of n² – 49 = 0? (1 point)

maks197457 [2]

Answer:

1. $n=\pm7$

2. $x=\pm7i[tex]3.[tex]\pm 12x =a$

4. 22

Step-by-step explanation:

1. $n^2 - 49 = 0$

$n^2 =49$

$n= \sqrt{49}$

$n=\pm7$

2. $x^2+64 = 0$

$x^2 =-64$

$x= \sqrt{49}$

$x=\pm7i[tex]3. Area of square = [tex]a^{2}$

Where a is the side

We are given an area o square = $144x^{2}$

So, $144x^{2}=a^{2}$

$\sqrt{144x^{2}}=a$

$\pm 12x =a$

4. We are given that the solution of quadratic equation -9 and 9

So, equation becomes:

$(x+9)(x-9)=0$

$x^2- 81=0$

So, in the given equation $x^2 + z = 103$

z should be the number from which if we subtract 103 so we get 81

Substitute z = 22

$x^2 + 22 = 103$

$x^2 + 22 -103=0$

$x^2 -81=0$

Thus the value of z is 22

8 0

3 years ago

Read 2 more answers

A class of 32 children need a pair of boots each for their school trip. How many children's boots will there be in total?

antiseptic1488 [7]

Answer: 64 boots in total

Step-by-step explanation:

Since a pair is 2, and there are 32 students that need a pair each, 32 x 2 = 64.

4 0

2 years ago

I really need help also if you could expalin it that would help alot!<br> ABC=DBC, AB=10 AC=7 DC=?

tiny-mole [99]

Answer:

Pretty sure DC is also 7.

Step-by-step explanation:

The triangle seems equal on both sides so if AC = 7, then DC = 7.

5 0

3 years ago

Read 2 more answers

Suppose you know that the equilibrium amount of investment in the global market is $10.4 trillion, the equilibrium interest rate

horrorfan [7]

Answer:

10.4.

Step-by-step explanation:

Given: the equilibrium amount of investment in the global market is $10.4 trillion.

the equilibrium interest rate is 5.5%, the income tax rate is 7%,

In loan-able funds market equilibrium investment should be equal to equilibrium savings. Hence global savings are also equal to $10.4 trillion.

Correct choice is 10.4.

6 0

3 years ago

-11(-7)<br><br> show how you got the answer<br> i need help

marusya05 [52]

For this case we must solve the following expression:

$-11 (-7)$

By law of multiplication of signs we have to:

$- * - =+\\- * + = -\\+ * - = -\\+ * + =+$

Also we must find the product of 11 and 7, this is equivalent to:

$11+ 11+ 11+ 11 +11+ 11 + 11 = 77$

Thus, the result of the expression is +77.

Answer:

$-11 (-7) = 77$

8 0

3 years ago