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serious [3.7K]
3 years ago
9

The product of -3x and (2x+5) is …​

Mathematics
2 answers:
vitfil [10]3 years ago
6 0

\huge\boxed{\mathfrak{Answer}}

- 3x \times (2x + 5) \\  =  - 3x \times 2x +  - 3x \times 5 \\  =  - 6x ^{2}  - 15x

Answer ⟶ <u>-</u><u> </u><u>6</u><u>x²</u><u> </u><u>-</u><u> </u><u>1</u><u>5</u><u>x</u>

PolarNik [594]3 years ago
5 0

\huge{\boxed{\boxed{ Solution ⎇}}} \

- 3x \times (2x + 5) \\  =  - 3x \times 2x +  - 3x \times 5 \\  =  - 6x ^{2}  - 15x

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ ツ

꧁❣ ʀᴀɪɴʙᴏᴡˢᵃˡᵗ2²2² ࿐

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The cost for 7 dance lessons is 82$. The cost for 11 lessons is 122$. Write and solve an equation to find the cost of 4 lessons
Juliette [100K]

Answer:

$52

Step-by-step explanation:

Using the equation

y=mx+c

82=7x+c

122=11x+c

11x-7x=122-82

4x=40

x=10

To get c

82=7(10)+c

82-70=c

c=12

For 4 lessons

y=10(4)+12=52

6 0
3 years ago
5 scholars ran a marthon each one ran 1\5 of a mile how far did the students run in all
IrinaK [193]

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Answer:

  1 mile

Step-by-step explanation:

  5 × (1/5 mi) = 5/5 mi = 1 mi

The students ran 1 mile in all.

3 0
3 years ago
A distributor needs to mix some Terraza coffee that normally sells for $9.00 per pound with some Kona coffee that normally sells
Scrat [10]

Answer:

Step-by-step explanation:

Mixture problems are really easy because the table never varies from one problem to another and they don't have a lot of variations in them like motion problems do. The table for us will look like this, using T for Terraza coffee and K for Kona:

                #lbs     x       $/lb       =         Total

T

K

Mix

Now we just have to fill this table in using the info given. We are told that T coffee is $9 per pound, and that K coffee is $13.50 per pound, so we will fill that in first:

                 #lbs        x        $/lb       =        Total

T                                           9

K                                         13.50

Mix

Next we are told that the mix is to be 50 pounds that will sell for $9.54 per pound

                  #lbs      x       $/lb        =        Total

T                                         9

K                                       13.50

Mix              50                 9.54

Now the last thing we have to have to fill in this table is what goes in the first column in rows 1 and 2. If we need a mix of 50 pounds of both coffees and we don't know how many pounds of each to use, then under T we have x and under K we have 50 - x. Notice along the top we have that the method to use to solve this problem is to multiply the #lbs by the cost per pound, and that is equal to the Total. So we'll do that too:

                 #lbs       x       $/lb      =      Total

T                   x        x          9         =        9x

K             50 - x      x       13.50     =    675 - 13.50x

Mix            50        x         9.54     =     477

The last column is the one we focus on. We add the total of T to the total of K and set it equal to the total Mix:

9x + 675 - 13.5x = 477 and

-4.5x = -198 so

x = 44 pounds. This means that the distributor needs to mix 44 pounds of T coffee with 6 pounds of K coffee to get the mix he wants and to sell that mix for $9.54 per pound.

6 0
3 years ago
Locate the easternmost trade route, which runs from the southern tip of what is
ivanzaharov [21]

Answer:

____________

is it 1700 miles ?

7 0
3 years ago
6th grade math !!!!!!!!!!
andrey2020 [161]

Answer:

3rd and 5th one

Step-by-step explanation:

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