1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mars1129 [50]
3 years ago
11

Multiply (9 − 4i)(2 + 5i).

Mathematics
2 answers:
Verdich [7]3 years ago
7 0

Answer:

38+37i

Step-by-step explanation:

(9 − 4i)(2 + 5i)= 18+45i-8i-20i²= 18+20+37i= 38+37i

lara [203]3 years ago
5 0

Answer:

38 + 37i

Step-by-step explanation:

(9 − 4i)(2 + 5i)

FOIL

first: 9*2 = 18

Outer: 9*5i = 45i

inner: -4i * 2 = -8i

last : -4i * 5i = -20i^2 = -20(-1) = 20

Combine together

18+45i-8i +20

38 + 37i

You might be interested in
Which statements are true? and whos down to talk?
Tems11 [23]

Answer:

please mention the statement

without that I can't help

have a beautiful day

6 0
3 years ago
Read 2 more answers
Each power smoothie that Theo makes has 3 scoops of mango, 1 scoop of strawberries, and 1 scoop of spinach. If Theo makes 7 powe
EleoNora [17]

Answer: 35 scoops total!

Step-by-step explanation: FIrst, you would add the number of scoops in total which is 3+1+1=5 scoops.

Now you would do 7*5=35

Therefore, Theo uses 35 scoops in all. I hope this helps you!

5 0
3 years ago
10•f(7)+9•g(-1)? What’s the answerrr
Inessa [10]

Answer:

= 70f - 9g

Step-by-step explanation:

1. Remove parentheses

2. Multiply the numbers

3. Multiply the numbers

5 0
3 years ago
Maria and Nate graphed lines on a coordinate plane. Maria's line is represented by the equation y = -5/6x +8. Nate's line is per
eduard

Answer:

c)   6x - 5y = 15

Step-by-step explanation:

Slope-intercept form of a linear equation:  y=mx+b

(where m is the slope and b is the y-intercept)

Maria's line:  y=-\dfrac{5}{6}x+8

Therefore, the slope of Maria's line is -\frac{5}{6}

If two lines are perpendicular to each other, the product of their slopes will be -1.

Therefore, the slope of Nate's line (m) is:

\begin{aligned}\implies m \times -\dfrac{5}{6} &=-1\\m & =\dfrac{6}{5}\end{aligned}

Therefore, the linear equation of Nate's line is:

y=\dfrac{6}{5}x+b\quad\textsf{(where b is some constant)}

Rearranging this to standard form:

\implies y=\dfrac{6}{5}x+b

\implies 5y=6x+5b

\implies 6x-5y=-5b

Therefore, <u>option c</u> could be an equation for Nate's line.

3 0
2 years ago
There are four boys and 8 girls on the debate team. the coach randomly chooses 3 of the students to participate in a competition
makvit [3.9K]
<span>the probability the coach selects all girls is m</span>ost likely 
3 0
3 years ago
Other questions:
  • Indirect Proof help! WILL MEDAL
    9·1 answer
  • If 3x-y=123x−x=123, x, minus, y, equals, 12, what is the value of \frac{8^x}{2^y} 2 y 8 x ​ start fraction, 8, start superscript
    10·1 answer
  • Determine whether quadrilateral ABCD with vertices A(–4, –5), B(–3, 0), C(0, 2), and D(5, 1) is a trapezoid. Step 1: Find the sl
    6·2 answers
  • Name the line and plane shown in the diagram. A.AB and plane ABD B.BA and plane DC C.AC and plane ABD D.AB and plane DA
    7·1 answer
  • Hey can anybody give me a teachers answer key on dis lessons
    12·1 answer
  • (Will mark brainliest!!!) 20 PTS !!
    12·1 answer
  • May someone help me with this?
    10·1 answer
  • Determine two numbers whose sum is 9 and whose product is 20, by<br> solving a quadratic equation.
    7·2 answers
  • Answer fast please!! :) i’ll give branliest
    15·2 answers
  • (2a-16)+(3a+18)=17 what is a?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!