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vagabundo [1.1K]
3 years ago
14

HELP THIS IS URGENT I NEED IT SOON! PLEASE

Mathematics
2 answers:
KiRa [710]2 years ago
4 0

Answer:

11

Step-by-step explanation:

(f + g)(x)

= f(x) + g(x)

= x² - 6x - 4 +5x + 3 ← collect like terms

= x² - x - 1

then

(f + g)(- 3) = (- 3)² - (- 3) - 1 = 9 + 3 - 1 = 11

Vlada [557]2 years ago
4 0

Answer:

11

Step-by-step explanation:

F(–3)=(–3)²–6(–3)–4===> 9+18–4=23

g(–3)=5(–3)+3=‐15+3=–12

23–12=11

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Find the x-intercepts for the parabola defined
Inessa05 [86]

Answer:

<h2>Explanation:</h2>

In this exercise we have the following equation of a parabola:

y=2x^2-12x+10

So our goal is to find the x-intercepts. We can find this setting y=0, so:

2x^2-12x+10=0

Taking 2 as common factor:

2(x^2-6x+5)=0

Hence this is a Non-perfect Square Trinomial. To factor out this, let's choose two numbers such that:

  • The sum is -6
  • The product is 5

Those two numbers are:

  • -1 and -5

Because:

  • Sum: -6
  • Product: 5

So this equation can be written as:

x^2 + (a + b)x + ab=(x + a)(x + b) \\ \\ a=-1 \\ b=-5 \\ \\  x^2-14x+24=(x-(-1))(x-(-5))=0 \\ \\ (x+1)(x+5)=0 \\ \\ So \ the \ solutions \ are: \\ \\ \boxed{x=-1 \ and \ x=-5}

<h2>Learn more:</h2>

Solutions to quadratic equation: brainly.com/question/13742278#

#LearnWithBrainly

5 0
3 years ago
Mom is 8 years older than 4 times Sarah’s age. The sum of their ages is less than 83. What is Sarah’s oldest possible age?
tigry1 [53]

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3 0
3 years ago
108 in equal less than greater than 7 ft
masya89 [10]
7 ft is greater than is Longer than 108. Hope this helps! (:
8 0
3 years ago
Ayanna bought three dozen donuts from Dunkin Donuts. She wants to share these between herself and three friends. How many donuts
Thepotemich [5.8K]

Answer:

9

Step-by-step explanation:

Ok... So there are 12 donuts in a dozen. And if she bought 3 dozen, she will have 36 donuts. If she plans to share them with her 3 friends, there will be 4 people total sharing the donuts. Then all you have to do is divide the 36 donuts among the 4 friends. 36/4=9. So they will all get 9 donuts.

3(12)/4=x

36/4=x

9=x

<u>x=9</u>

6 0
4 years ago
Read 2 more answers
A cake is made from the ingredients listed below.
Oksana_A [137]

To make a cake :-

Quantity of flour needed = 500 g

Quantity of butter needed = 450 g

Quantity of sugar needed = 470 g

Quantity of mixed fruit needed = 1.8 kg = 1000 g + 800 g

Quantity of eggs needed = 70 × 4 = 280 g

It's weight after adding all the ingredients =

=500 + 450 + 470 + 1000 + 800 + 280

= 3500 g

Mass that got lost while baking the cake :

<h3>= 12 % of 3500 </h3>

= \frac{12}{100}  \: of \: 3500

=  \frac{12}{100}  \times 3500

=\frac{(12 \times 3500)}{100}

=\frac{42000}{100}  \: g

= 420 \: g

Final mass = Initial mass - mass that got lost

= 3500 - 420 \: g

= 3080 \: g

∴ The final mass of the cake is 3080 g .

5 0
3 years ago
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