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egoroff_w [7]
3 years ago
6

4a2∙3a5 = (4 + 3)a2+5 = 7a7

Mathematics
2 answers:
KATRIN_1 [288]3 years ago
7 0

Answer:

a=5/7

Step-by-step explanation:

1. Calculate 5=(4+3)a ----  5=7a

2. 5=7a --- 7a=5

3. Dvidie both sides 7a=5--- a=5/7

AleksAgata [21]3 years ago
6 0

Answer: its false

Step-by-step explanation:

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Geneva's younger brother has a toy box that is 3.6 feet
Anestetic [448]

Answer:

12.96 ft ³

Step-by-step explanation:

3 0
3 years ago
Persamaan garis lurus yang melalui titik potong garis dengan persamaan 2x+5y=1 dan x-3y=-5 serta tegak lurus garis dengan persam
Novosadov [1.4K]

pertama menemukan tempat di mana dua persamaan mencegat<span>
2x+5y=1
x-3y=-5
</span>
kalikan persamaan kedua ( x - 3y = -5 ) oleh -2
-2x+6y=10
<span>tambahkan dua persamaan bersama-sama
2x+5=1
<u>-2x+6y=10 +</u>
0x+11y=11
</span>
11y=11
<span>membagi kedua sisi dengan 11
y=1
</span>
subsitute y = 1 untuk y dalam semua persamaan untuk memecahkan x
x-3y=-5
x-3(1)=-5
x-3=5
x=8

x=8
y=1
(x,y)
<span>titik persimpangan adalah ( 8,1 )

</span>
<span>untuk membuat menemukan garis tegak lurus lebih mudah , mengkonversi persamaan terakhir ke bentuk lereng - intercept
2x-y+5=0
2x+5=y
y=2x+5
</span>
<span>garis tegak lurus memiliki kemiringan yang , bila dikalikan dengan kemiringan garis lainnya , memberikan -1
y=mx+b
m=</span>lereng

y=2x+5
2 <span>dikalikan x=-1
x=-1/2
y=-1/2x+b
</span><span>subsitute ( 8,1 ) ke dalam persamaan dan memecahkan untuk b
x=8
y=1
1=-1/2(8)+b
1=-4+b</span>
tambahkan 4 untuk kedua belah pihak
5=b
<span>persamaan adalah y=-1/2+5
</span>
<span>( Catatan : Saya menggunakan google translate )</span>



7 0
4 years ago
HELP I NEED THESE ANSWERED!!!
levacccp [35]

1) b=1

-3+1=3b-5

Add 3b to both sides.

1=6b-5

Add 5 to both sides

6=6b

Divide both sides by 6

b=1

2) t=11

(1/2)t+7=(3/2)t-4

Subtract 1/2t from both sides.

7=t-4

Add 4 to both sides.

t=11

3) x=-0.878

-2.3 +1.2x=5.9-2.9x

Subtract 1.2x from both sides

-2.3=5.9-4.1x

Add 5.9 to both sides.

3.6=-4.1x

Divide by -4.1

x=-0.878

4)No solution

-7y-21=-3y-21

Add 3y to both sides.

-4y-21=-21

Add 21 to both sides

-4y=0



5 0
4 years ago
The zeros of a quadratic function are 6 and -4. Which of these choices could be the function?
geniusboy [140]

Answer:

C

Step-by-step explanation:

If x = a is a zero of f(x) then (x - a) is a factor of f(x)

Here the zeros are x = 6 and x = - 4 then the corresponding factors are

(x - 6) and (x - (- 4) ) , that is (x - 6) and (x + 4)

Then f(x) is the product of the factors

f(x) = a(x - 6)(x + 4) ( a is a multiplier )

If a = 1 , then

f(x) = (x - 6)(x + 4) ← is a possible choice → C

6 0
3 years ago
Read 2 more answers
Please help me solve this !!
mixas84 [53]

Answer:

B) 6.68

Step-by-step explanation:

Use Cosine.

Cosine= Adjacent ÷ Hypotenuse

In this case the base you want to find is adjacent to the angle, 42°. Hence,

Cos (42)= adjacent ÷ hypotenuse

Cos (42) = x ÷ 9

x = Cos (42) × 9. Input that into your calculator.

x= 6.68

To remember the trigonometric ratios/formulas

Use the acronym, SOHCAHTOA

Hope this helps!!!!

5 0
3 years ago
Read 2 more answers
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