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ra1l [238]
3 years ago
6

Find the numbers in d blank

Mathematics
2 answers:
slega [8]3 years ago
6 0
Lets say:
Top row: a + b = 8
bottom row: c - d = 6 
left column: a + c = 13
right column: b + d = 8

As you know: a + b = 8 
Also               b + d = 8 
so from here we know a = d  

c -d = 6  then---> c - a = 6 (because a = d)  -> a = c - 6
We know a + c = 13 then
              (c - 6) + c = 13
              2c -6 =13
              2c = 19
               c = 19/2 = 9.5
             
but c - a = 6
      9.5 - a = 6
       a = 9.5 - 6 =3.5 

but a =  d = 3.5

a + b = 8
3.5 + b = 8
b = 8 -3.5 = 4.5

so a = 3.5, b = 4.5, c = 9.5, d = a = 3.5

Result:
a + b = 3.5 + 4.5 =8
c - d = 9.5 - 3.5 = 6
a + c = 3.5 + 9.5 = 13
b + d = 4.5 + 3.5 = 8




Hunter-Best [27]3 years ago
5 0
The missing numbers would be 12-6
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Can someone help me please
Dimas [21]

Answer:

  g(x)=-x^2-8x-22

Step-by-step explanation:

Perform the multiplication and addition:

  g(x)=-(x+4)^2-6=-(x^2+8x+16)-6=-x^2-8x-16-6\\\\g(x)=-x^2-8x-22

_____

<em>Comment on the squaring</em>

There are several ways you can find the square (x+4)².

  1. Use your knowledge that (x+a)² = x²+2ax+a².
  2. Use FOIL* to compute (x+4)(x+4) = x² +4x +4x +4² = x²+8x+16
  3. Use the distributive property: (x+4)(x+4) = x(x+4) +4(x+4) = x² +4x +4x +4² (same as FOIL for two binomials)

__

* FOIL is mnemonic for {First, Outer, Inner, Last} referring to pairs of terms in the factors (x +a)(x +b). The x terms are the First terms. The Outer terms are the first x and b. The Inner terms are "a" and the second x. The Last terms are "a" and "b". You are to form the sum of those pairs of terms to find the product of the binomials.

5 0
3 years ago
A container of coffee is 1/6 full. That container contains 2/3 of a pound of coffee write a division expression that represents
Marizza181 [45]

Let us assume total capacity of the container = x pounds.

Container contains 1/6th coffee of total x pounds,  that is x/6 pounds.

We also given that 1/6th part is equal to 2/3 of a pound.

So, we could setup an equation now.

x/6 pounds equals 2/3 of a pound.

\frac{x}{6} = \frac{2}{3}

Dividing both sides by 1/6, we get

\frac{x}{6} ÷ \frac{1}{6} = \frac{2}{3} ÷\frac{1}{6}.

Therefore,  x = \frac{2}{3} ÷\frac{1}{6}

Division expression that represents the capacity of the container = 2/3 ÷ 1/6.


4 0
3 years ago
The Moores family paid $6 more for skate rentals than the Cotters did. Together the two families paid $30 for skate rentals. How
Mademuasel [1]
<span>Moores Family Paid = 6 dollars mores for skate rental than the cotters did.
30 dollars = the total amount they paid for skate rentals.
Let Family Moore have the variable X
Let the Family Cotters have the variable Y
=> x = y + 6
=> y = 30 – 6 / 2
First, let’s solve the Y
=> Y – 30 – 6 / 2
=> Y = 24 / 2
=> y = 12
Now, let’s solve for X
=> X = y + 6
=> x = 12 + 6
=> X = 18

</span>



8 0
3 years ago
Are the expressions 3/4a + 8 - 1/4a - 2 and 1/2(a + 12) equivalent? Show why or why not.
natta225 [31]

Answer:Yes they are equivalent.

Step-by-step explanation:

3/4a + 8 - 1/4a - 2 1/2(a + 12)

Combine like terms Distributive property

2/4a+6 1/2a+6

2/4=1/2 (simplify)

1/2+6=1/2+6

4 0
3 years ago
9. Your bank account has a balance of $145.67. You make a withdrawal
Nataliya [291]
There is $103.15 in your bank account.
4 0
3 years ago
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