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Bezzdna [24]
3 years ago
14

It is known that:the pair of variables x=5, y=7 is the solution to the equation ax–2y=1. Find the coefficient a.

Mathematics
2 answers:
kicyunya [14]3 years ago
8 0

Answer:

a = 3

Step-by-step explanation:

Fill in the given values:

a*5-2*7 = 1 =>

5a = 1 + 14

a = 15/5 = 3

Ierofanga [76]3 years ago
4 0

Answer:

a=3

Step-by-step explanation:

First, you replace the variables x and y in the equation with their respectful values, making the equation 5a-2(7)=1.

Then, you simplify the -2(7), which equals 14, making the equation 5a-14=1.

Then, you add 14 from both sides, making the equation 5a=15.

Finally, you divide both sides by 5, making the answer a=3.

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cestrela7 [59]
Lil mosey is white sussy balls

7 0
3 years ago
Write the rule for this pattern:2,4,7,14,17,34
Masja [62]

Answer:

The rule is x₁ = 2   x₂ = x₁ * 2    x₃ = x₂ + 3    x₄ = x₃ * 2    x₅ = x₄ + 3 ...

Step-by-step explanation:

Unable to use a single equation to define this sequence

The rule is x₁ = 2   x₂ = x₁ * 2    x₃ = x₂ + 3    x₄ = x₃ * 2    x₅ = x₄ + 3 ...

Multiply 2 then Plus 3 then multiply 2 then plus 3 ......

2,4,7,14,17,34, 37, 74, 77, 154....

6 0
3 years ago
Из листа картона длиной 35 см и шириной 20 см Маша вырезала четыре квадрата площадью 1 дм2 каждый.Найди площадь остатка картона.
myrzilka [38]
The question in Englih is
<span>From a cardboard sheet 35 cm long and 20 cm wide, Masha cut out four squares of 1 dm2 each. Find the area of ​​the cardboard residue. Answer the question in dm2
</span>
Step 1
<span>convert cm to dm
</span>we know that
1 cm is---------------> 0.10 dm
then
35 cm--------------> 3.5 dm
20 cm--------------> 2 dm

Step 2
find the area of ​​the cardboard
Area=3.5*2=7 dm²

Step 3
find the area of ​​the cardboard residue
Area=7-4*1=3 dm²

the answer is 3 dm²


<span>the answer in Russian
</span>

Шаг 1
преобразовать cm в дм
мы знаем это
1 cm ---------------> 0.10 дм
тогда
35 cm--------------> 3.5 дм
20 cm--------------> 2 дм

Шаг 2
найти область картона
Площадь=3.5*2=7 дм²

Шаг 3
<span>найти область остатка картона
</span>Площадь=7-4*1=3 дм²
ответ 3 дм²

ответ 3 дм²
4 0
3 years ago
Read 2 more answers
01: Which gives the correct order of steps needed to multiply the problem below? 83 X 39 O Multiply the ones. 8 times 39 is 312.
Burka [1]

Answer:

Multiply the ones. 9 times 83 is 747. Multiply the tens. 30 times 83 is 2,490. Add the products to get 3,237.

The rest of the question:

Which gives the correct order of steps needed to multiply the problem below?   "83x39 "

The steps to multiply  83x39

1) multiply the ones 9 times 83 = 9 times 3 + 9 times 80 = 27 + 720 = 747

2) multiply the tens 30 times 83 = 30 times 3 + 30 times 80 = 90 + 2400 = 2490

3) add 747 and 2490 = 747 + 2490 = 3,237

According to the previous steps, the answer is option 3

Multiply the ones. 9 times 83 is 747. Multiply the tens. 30 times 83 is 2,490. Add the products to get 3,237.

6 0
3 years ago
Read 2 more answers
On Friday 237 people attended film festival.there r more 446 people who attended on Saturday than Friday .liza says that a total
pentagon [3]
Liza is wrong because...

Friday = 237
Saturday = 237 + 446
Both days = 920

4 0
3 years ago
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