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3 years ago

64×15=32×30 true or false

Mathematics

2 answers:

Fofino [41]3 years ago

8 0

64x15=960 and 32x30=960
so therefore it is true

Dima020 [189]3 years ago

4 0

$\large \mathfrak{Solution : }$

Yes, it's true because the value of LHS = RHS if we solve it .

$64 \times 15 = 32 \times 30$

$90 = 90$

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Find two complex numbers that have a sum of 10i, a difference of -4 and a product of -29

HACTEHA [7]

Let these two numbers be $z$ and $w$ . Their sum is $10i$ , their difference is -4, and their product is -29:

$z+w=10i$

$z-w=-4$

$zw=-29$

Add the first two equations together to eliminate $w$ :

$(z+w)+(z-w)=10i-4\implies 2z=-4+10i\implies z=-2+5i$

Then

$w=10i-z\implies w=10i-(-2+5i)=2+5i$

Just to confirm this is correct, check their product:

$(-2+5i)(2+5i)=-4+25i^2=-4-25=-29$

5 0

3 years ago

A newly-planted tree needs to be staked with three wires. Each wire is attached to the trunk 3 ft. above the ground, and then an

jolli1 [7]

Multiply 3 by 6 to get 18 the rest of it is extra information

3*6 = 18

6 0

3 years ago

72.2 is incorrect :( i don’t know how to solve this <br> (Geometry)

Triss [41]

AC and DB are the same length. Set the two to equal each other and solve for y.

9y + 1 = 8y +17

Subtract 8y from both sides:

y + 1 = 17

Subtract 1 from each side:

y = 16

Now you know Y you can find the the length of DB:

DB = 8y +17 = 8(16) +17 = 128 + 17 = 145

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EB = 145 / 2

EB = 72.5

6 0

3 years ago

Will give brainliest

VikaD [51]

Answer: The number of the adult tickets is 168

Step-by-step explanation: * Lets explain how to solve the problem

- The adults ticket costs $10.50

- The students ticket costs $3.75

- The total money of the opening night is $2071.50

- The equation of the total money earned in the opening night is:

10.50 a + 3.75 b = 2071.50, where a is the number of the adult ticket

and b is the number of the student ticket

- There were 82 students attended

* Lets solve the problem

∵ 10.50 a + 3.75 b = 2071.50

∵ The number of the students attended is 82

∵ b is the number of the students

∴ b = 82

- Substitute the value of b in the equation

∴ 10.50 a + 3.75(82) = 2071.50

∴ 10.50 a + 307.5 = 2071.50

- Subtract 307.5 from both sides

∴ 10.50 a = 1764

- Divide both sides by 10.50

∴ a = 168

∵ a is the number of the adult tickets

∴ The number of the adult tickets is 168

Give credit to ashraf 82

8 0

3 years ago

A bank advertises an interest rate of 4% per year, compounded monthly

Darina [25.2K]

Given :

Interest rate , r = 4 %.

To Find :

The APY .

Solution :

APY is given by :

$APY=(1+\dfrac{r}{n})^n-1$

Here , r is compound interest and n is number of time compounded .

So ,

$APY=(1+\dfrac{r}{n})^n-1\\\\APY=(1+\dfrac{4}{12})^{12}-1\\\\APY=30.57\%$

Therefore , APY is 30.57 % .

Hence , this is the required solution .

4 0

4 years ago